Scientists virus shedding. Medical search. Frequent questions

This shutdown occurs when mutated versions of the virus infect and destroy the body's T cells, which are critical to immune function. (fredhutch.org)
The study, which has not yet been peer-reviewed, also found that lateral flow tests, also known as rapid tests, were effective in detecting when participants were shedding enough virus to potentially infect other people. (the-scientist.com)
By the time most dogs are treated by veterinarians, they have typically already gone through a phase of contagious "virus shedding," which allows them to infect other animals. (kfvs12.com)
Because rabies only infects neurons, scientists have long worked to create a modified, safer version of the virus that will not infect human neurons, but can be used in experimental animals. (technologynetworks.com)
Considering the extensive mutations in the RBD regions of the SARS-CoV-2 variants, especially the heavily mutated Omicron variant, these viruses may hold a latent potential to infect humans through further adaptation," the authors of the study added. (ndtv.com)
In addition, when pregnant cows are infected, BVDV can cross the placenta and infect developing calves, resulting in abortion, congenital malformation, or persistently infected cattle who constantly shed the virus and are at risk for secondary bacterial infections. (umn.edu)
More precisely, it means that the proportion of people who can get sick balances out the 'basic reproduction number' of the virus, the number of individuals that an infected individual would infect, assuming a population in which everyone could get sick. (cdc.gov)

His research focuses on the structural analyses of transmembrane proteins (mostly from viral origin), and research into viruses (including the coronavirus) and antivirals. (wikipedia.org)
Since then, thousands of scientific papers have been published on the outbreak, including the genetic sequence of the new virus, which confirms its close relationship to coronaviruses carried by bats and therefore gives us clues of where this new coronavirus came from. (thenakedscientists.com)
Dennis - We don't know why bats, except that bats are able to host viruses like coronavirus without themselves having any adverse effects, and they will periodically shed these viruses in their faeces or in their saliva. (thenakedscientists.com)
The research team engineered NDV to produce the spike proteins of the SARS-CoV-2 virus to prime the body's immune system to attack the coronavirus. (healthday.com)
The research looked at a number of different viruses including SARS-CoV-2 - the coronavirus that has caused COVID-19. (sciencealert.com)
Bath scientists will work with a UK-wide team to develop a standardised system for detecting coronavirus in wastewater, in order to provide an early warning of future outbreaks and reduce reliance on costly testing of large populations. (bath.ac.uk)
The Middle East respiratory syndrome multiple transmission chains also oc- dispersion of the virus into susceptible coronavirus (MERS-Cov), first detected curred in Jordan, and in South Korea populations. (who.int)
People who are infected with the coronavirus shed the pathogen in their stool. (cdc.gov)
RÉSUMÉ Une analyse documentaire des informations publiques disponibles a été entreprise afin de passer en revue les connaissances et les lacunes actuelles sur le coronavirus du syndrome respiratoire du Moyen-Orient (MERS-CoV), notamment sur son origine, la transmission, les mesures de lutte efficaces et la prise en charge. (who.int)

People infected with SARS-CoV-2, the virus that causes COVID-19, shed viral RNA, genetic material from the virus, in their feces. (nhpr.org)
Studies show the virus causing COVID-19 is shed in feces meaning it's collecting in our city sewers. (wate.com)

It's also unknown whether asymptomatic individuals are shedding different quantities of virus than those with symptoms, a drawback of the qualitative testing performed by most labs. (scitechdaily.com)
Specifically, scientists are studying semen and vaginal secretions to understand the incidence of viral shedding, the concentrations of virus, and the duration and pattern (e.g., steady decline, intermittent on/off) of viral shedding in genital secretions of symptomatic and asymptomatic individuals. (cdc.gov)

There was also a significant spread in how long children continued to shed virus and could be potentially infectious. (scitechdaily.com)
A qualitative "positive" or "negative" on testing platforms may not necessarily reflect infectivity, with some positives reflecting bits of genetic material that may not be able to make someone sick or negatives reflecting low levels of virus that may still be infectious. (scitechdaily.com)
Generally, a sick person is most infectious as soon as the first symptoms appear and less infectious as his or her immune system clears the virus. (livescience.com)
After her first year, the Leverett House resident began working in the lab of Professor of Organismic and Evolutionary Biology and Professor of Immunology and Infectious Diseases Pardis Sabeti, and co-authored papers on the development of a new diagnostic test for Zika virus and for a method to test for Zika, chikungunya, and dengue. (harvard.edu)
It took longer for the subjects' noses to begin shedding virus but when they did, the noses produced far more infectious particles than the throat had. (the-scientist.com)
We found that overall, lateral flow tests correlate very well with the presence of infectious virus," says the trial's chief investigator, Christopher Chiu of Imperial College London, in a press release . (the-scientist.com)
In an open letter to the World Health Organization (WHO), Bossche wrote that "we are currently turning vaccinees into asymptomatic carriers shedding infectious variants. (21stcenturywire.com)
She's a research scientist at the Vaccine and Infectious Disease Organization at the University of Saskatchewan. (tpr.org)
Dr Andrew Singer of UKCEH, principal investigator of the new National COVID-19 Wastewater Epidemiology Surveillance Programme (N-WESP), says: "Several studies have shown that the RNA of SARS-CoV-2 - the genetic material of the virus - can be detected in wastewater ahead of local hospital admissions, which means wastewater could effectively become the 'canary in the coal mine' for COVID-19 and other emerging infectious diseases. (bath.ac.uk)
Bath's Professor Barbara Kasprzyk-Hordern , one of the programme's co-investigators, explains: "Wastewater-based epidemiology offers a promising method for monitoring a pandemic, particularly for infectious diseases such as COVID-19 where asymptomatic cases play a significant role in transmitting the virus. (bath.ac.uk)
Based on the Michel Crighton novel, the film follows scientists investigating an infectious organism that fell to Earth from space. (cinemashed.com)

As the virus evolved into different variants, like Delta and Omicron, sequencing its genetic material helped identify which strains were more prevalent in different areas. (kxan.com)
For the study, researchers recruited people between the ages of 18-29 who had not been previously infected or vaccinated against the virus and exposed them to SARS-CoV-2 made from a sample that was collected early in the pandemic before variants emerged. (the-scientist.com)
In addition, Van Breemen himself acknowledged that both CBDA and CBGA curbed the action of emerging variants of the virus that causes Covid-19. (getbudslegalize.com)
By measuring and sequencing the viral material present in sewage, scientists can determine whether cases are rising in a particular area and which variants are circulating. (cdc.gov)

Recent research indicates that children can spread SARS-CoV-2, the virus responsible for COVID-19, even in the absence of symptoms or long after symptoms have resolved. (scitechdaily.com)
Johnson believes this indicates that someone has been carrying and shedding the COVID virus for more than two years. (kxan.com)
We don't have a definitive answer as to how the COVID-19 virus entered the human population, but we've seen enough examples of the virus moving, either directly or indirectly, from bats, that it's the most reasonable explanation. (thenakedscientists.com)
Whereas with COVID wastewater, we found that up to 50 percent of people will shed COVID virus in their stool regardless of whether or not they have symptoms," she said. (wvpe.org)
A nasal spray vaccine for COVID-19 could provide a low-cost alternative for the developing world, because it could be produced using existing worldwide infrastructure for seasonal flu virus vaccines, the researchers suggested. (healthday.com)
The scientists successfully detected SARS-CoV2 - the virus that leads to the disease COVID-19 - in untreated sewage from two plants in southeast Queensland. (yahoo.com)
Cleaning Products Can Kill The COVID-19 Virus. (sciencealert.com)
COVID-19 has only been around for a few months, so at this point scientists don't know that much about it. (sciencealert.com)
China will test thousands of Wuhan blood samples from two years ago in a bid to shed new light on the origins of Covid-19. (yahoo.com)
The origins of the Covid-19 virus has been a contentious issue, with Beijing reacting angrily to suggestions from the West it failed in its response during the early weeks of the pandemic as well as allegations it covered up key information and the severity of the initial outbreak. (yahoo.com)
People who have experienced COVID symptoms for months or longer after being infected exhibit different immune and hormonal responses to the virus, a new study finds. (futurity.org)
An estimated 7.5% of people infected with the SARS-CoV-2 virus in the US later suffer from long COVID. (futurity.org)
Among those who had exhibited long COVID researchers also found increased circulation of antibodies that help the body fight non-COVID-19 viruses, particularly those known to defend against Epstein-Barr virus, a human herpesvirus that has been linked with many cancers. (futurity.org)
Ellen Foxman, an assistant professor at the Yale School of Medicine, considers the risk minimal, citing a recent study in the New England Journal of Medicine that found the COVID-19 virus survived on cardboard surfaces for no more than 24 hours. (bostonglobe.com)
The majority of people infected with SARS-CoV-2 - the virus that causes the COVID-19 disease - are believed to shed the virus in their faeces, even if they are asymptomatic, so sewage surveillance is widely seen as a promising way of identifying future disease hotspots. (bath.ac.uk)
So wastewater surveillance has become a critical tool for keeping tabs on the virus, especially as Covid-19 testing has increasingly shifted to the home. (cdc.gov)
Background: Understanding the COVID-19 disease course in terms of viral shedding is important to assist in providing a tailored isolation and treatment practice. (bvsalud.org)
COVID-19 is spread primarily by respiratory droplets contaminating surfaces and hands that then transmit the virus to another person's respiratory system. (bvsalud.org)
Africa, and sub-Saharan Africa in particular, is one of the last continents to have recorded COVID-19 cases, and is expected to be severely impacted by the virus. (bvsalud.org)

Newswise - HAMILTON, ON, Jan. 4, 2018 - A team of scientists has sequenced the complete genome of an ancient strain of the Hepatitis B virus (HBV), shedding new light on a pervasive, complex and deadly pathogen that today kills nearly one million people every year. (newswise.com)
Nearly three dozen people in China have been sickened by a newly identified virus from the same family as the deadly Nipah and Hendra viruses, though there's no evidence the pathogen can be transmitted from person-to-person. (medworm.com)
Neutralising antibodies are antibodies elicited upon natural infection that are capable of blocking the biological effect of a pathogen, for example a virus, and are therefore capable of reducing or stopping the disease caused by that pathogen. (sciencemediahub.eu)
The central banks in China and South Korea have treated cash with heat, microwaves, or pathogen-killing ultraviolet light, while the US Federal Reserve is quarantining currency shipments from Asian and European countries for periods of seven to 10 days, to give time for any virus particles to become inactive. (bostonglobe.com)
Potential reasons for the disparate findings: "The SARS-CoV-2 vaccine and the influenza vaccine have different mechanisms of action from each other, and antibody response may vary greatly depending on whether the immune system recognizes the pathogen from earlier infections, such as influenza, or whether it is confronted by a novel virus," says Klerman. (harvard.edu)

early in the pandemic, scientists reported detecting the virus in the wastewater of urban areas ( 8 , 9 ). (cdc.gov)
Johnson found that these unique versions of the virus would linger in one wastewater system for a period of time and suddenly disappear. (kxan.com)
The team at South Platte Renew had stumbled onto a powerful new public health tool: testing wastewater to monitor, wave by wave, the spread of a virus. (nhpr.org)
In wastewater tests, scientists use that RNA to tell what's there. (nhpr.org)

They are extremely contagious, and fewer than twenty virus particles can cause an infection (some research suggests as few as five). (wikipedia.org)
SIMMONS-DUFFIN: That suggests people infected with delta are shedding way more virus, which could explain why it's so contagious. (tpr.org)

Further, testing only for active virus instead of antibodies ignores the vast number of individuals who may have had and cleared an asymptomatic or mild infection, an important factor for understanding herd immunity. (scitechdaily.com)
The viruses continue to be shed after symptoms have subsided and shedding can still be detected many weeks after infection. (wikipedia.org)
The number varies dramatically and changes over the course of an infection as the immune system clears out the virus. (livescience.com)
Morris Animal Foundation's senior scientific and communications adviser Dr Kelly Diehl said the importance of this finding cannot be overstated: "Finding a new virus responsible for disease is the first step in developing a vaccine to prevent infection," Dr Diehl said. (edu.au)
Limited data suggest the incidence of Zika virus RNA shedding in semen and its persistence after infection are likely similar for symptomatic and asymptomatic men infected with Zika virus. (cdc.gov)
In retroviral infection, a virus infects a new host through receptor proteins on cells at the infection site, much like a key fits into a lock. (fredhutch.org)
Now, scientists studying FeLV have identified another factor in the infection process: a secondary retroviral receptor (or cofactor) that is crucial for the mutated, or T-cell adapted, virus to do its work. (fredhutch.org)
Dr. Rebecca Vega Thurber, Microbiology and other scientists at Oregon State University have shown that viral infection is involved in coral bleaching -- the breakdown of the symbiotic relationship between corals and the algae they rely on for energy. (oregonstate.edu)
So by opening the window, you can remove and disperse the droplets and reduce the amount of virus in the air - which will reduce the risk of infection for others. (sciencealert.com)
The team could then direct the viral infection just as Salk scientists had done but without risking premature cell death. (technologynetworks.com)
A receptor-binding domain (RBD) is a key part of a virus that allows it to dock to body receptors to gain entry into cells and lead to infection. (ndtv.com)
Dengue and Zika virus infection has been found to up against a human and mosquito immune defense mechanism and highjack specific host proteins for virus replication. (medindia.net)
The Zika outbreak that swept through the Americas in 2015 and 2016 showed the virus could, in rare cases, cause Guillain-Barre, an autoimmune disorder in which the body attacks itself in the aftermath of an infection. (medscape.com)
Since the Zika virus attacks nerve cells, scientists were not sure whether the Guillain-Barre cases they had seen in Zika patients were caused by an autoimmune response to the Zika infection or a direct attack by the virus on nerve cells. (medscape.com)
Case report: Clearance of longstanding, immune-deficiency-associated, vaccine-derived polio virus infection following remdesivir therapy for chronic SARS-CoV-2 infection. (cdc.gov)
Serum samples from those afflicted demonstrated evidence of Hantavirus infection and within 10 weeks of the original outbreak, researchers had successfully developed a diagnostic test for the virus. (medscape.com)

We need to get a flu vaccine every year primarily because the influenza virus changes, or evolves, from one year to the next (Nelson & Holmes 2007). (sciforums.com)
The vaccine also reduced lung damage, inflammation and disease severity in the rodents, according to scientists from Lancaster University in England and Texas Biomedical Research Institute in San Antonio. (healthday.com)
We found that administering this vaccine through a nasal spray completely protected the animals from shedding the virus which causes transmission of the virus. (healthday.com)
The nasal spray vaccine is based on a common poultry virus called the Newcastle Disease Virus (NDV), which can replicate in humans but is harmless. (healthday.com)
Without going into the details, because this is very difficult to get across, but is there a difference with how viruses operate that make some easier to get a vaccine for? (21stcenturywire.com)
Far from just being used to test new vaccines, the team hope that it will shed some light on the origins of the original smallpox vaccine. (iflscience.com)
If you have been wondering when you would receive your vaccine, why you should get vaccinated and are concerned about what your are hearing about side effects, this episode of Science with 5 with WHO's Chief Scientist Dr Soumya Swaminathan is for you. (bvsalud.org)
WHO's Chief Scientist Dr Soumya Swaminathan explains these and other vaccine related questions in Science in 5 this week. (bvsalud.org)

If treatment stops, these cells can cause rebounding virus levels and a return of symptoms. (bvsalud.org)

Scientists who study the ways we cough and sneeze are shedding light on how viruses like influenza spread. (livescience.com)
But a 2014 study by French and Saudi scientists published in the journal Future Microbiology that studied how long viruses can survive on paper money found that influenza can remain active on currency for up to eight days. (bostonglobe.com)

Researchers have shown that deforestation can drive outbreaks by bringing people closer to wildlife, which can shed dangerous viruses. (propublica.org)
One of the really, really dangerous viruses we have out there in the world. (21stcenturywire.com)
Rather, it had its genetic machinery tweaked to resist infections from dangerous viruses. (singularityhub.com)

If a person is sick, the droplets in a single cough may contain as many as two hundred million individual virus particles. (livescience.com)
When a droplet lands on paper, its virus particles can survive for hours. (livescience.com)
We can become infected with a small number of virus particles - by inhaling particles expelled when another person coughs, for instance - and then become sick several days later as the viruses replicate within our bodies. (sciforums.com)
We also now know that the virus particles are shed through saliva and fluids coughed up from the lungs. (sciencealert.com)
It's easy for an infected person to spread the virus particles through coughing, touching other people or leaving the virus on surfaces. (sciencealert.com)
The amount of virus particles during this time does reduce, but it's worrying that the particles can last for days rather than hours or minutes on a surface. (sciencealert.com)
The bleach works by destroying the protein and what's known as the ribonucleic acid (RNA) of the virus - this is the substance that gives the blueprint for making more virus particles when you become infected. (sciencealert.com)

The Illinois Department of Public Health (IDPH) has confirmed the first human West Nile virus-related death in Illinois for 2018. (outbreaknewstoday.com)

The discovery of the companion cat hepadnavirus in the same family as hep B in humans could provide clues about the evolution of potentially deadly hepatitis viruses in all species. (edu.au)
The discovery of these distinct responses can help scientists for the first time identify the causes-and potentially explore cures-for the often debilitating illness that has afflicted millions of people worldwide. (futurity.org)
US scientists report that they have produced a gene-edited calf with reduced susceptibility to bovine viral diarrhea virus (BVDV), an innovation they say could potentially reduce antimicrobial use in cattle. (umn.edu)

Professor Beatty's team first identified the virus in a feline immunodeficiency virus positive cat that died of lymphoma - a common cancer of cats. (edu.au)

A third and important point, they say, is the duration of viral shedding. (scitechdaily.com)
Studies of the onset and duration of virus shedding in affected patients are needed, but what else? (sciencemediahub.eu)

Scientists from more than fifty institutions, including Cairo University in Egypt, assembled consensus guidelines for reporting and analysing the genome sequences of previously unidentified viruses. (springernature.app)
In fact, the genomes of more than 750,000 uncultivated viruses have been identified in the past two years due to advances in genome sequencing technologies. (springernature.app)
Because we are seeing an incredibly large number of virus genomes in sequencing data from all types of samples, we believe the community needed a set of standards to analyse these data," says the study's lead author, Simon Roux from the US Department of Energy Joint Genome Institute. (springernature.app)
In their guidelines, the team outlined the minimum amount of information needed for an uncultivated virus genome, including the source, methods of identification of the virus genome, and data quality. (springernature.app)
Minimum information about an uncultivated virus genome (MIUViG). (springernature.app)
Researchers at the Institute of Bioengineering and Nanotechnology (IBN), Institute of Molecular and Cell Biology (IMCB) and Genome Institute of Singapore (GIS) have successfully developed a miniaturized device that can be used to detect the highly pathogenic avian flu (H5N1) virus. (medicalxpress.com)

Biopharma involves using living things - such as bacteria, viruses, or cell lines - to make drugs or treatments for diseases. (genomeweb.com)
The engineered bacteria are now resistant to even the most aggressive viruses, with little chance of leaking their synthetic code into the wild. (singularityhub.com)
Dousing the bacteria with viruses isolated from multiple sources-pig manure and scrapings from a chicken shed-they found roughly a dozen viruses that could still penetrate the bacteria's genetic defenses. (singularityhub.com)
Your immune system's job is to keep you healthy by detecting and fighting harmful intruders such as bacteria and viruses. (medlineplus.gov)

In pregnant women, the virus infects fetal brain cells, resulting in the birth defect known as microcephaly. (medscape.com)

With swine flu now declared pandemic , health officials say the best ways to prevent the spread of the virus is to wash your hands and cover your mouth when you cough or sneeze. (livescience.com)
Chris Pine, Piper Perabo, and Emily VanCamp star in this movie about a group of friends trying to outrun a pandemic who realize on their journey that the evils of man are just as threatening as any virus. (cinemashed.com)

Professor Beatty noted that similar viruses could cause hepatitis and liver cancers in other species, but that there was no risk to humans or other pets from the newly discovered cat hepadnavirus. (edu.au)
We're not doing enough to prevent viruses from spilling over from wildlife to humans. (propublica.org)
We're investigating the cause of viruses spilling over from animals to humans - and what can be done to stop it. (propublica.org)
Michael - The answers to these questions are sometimes elusive, and it is quite a detective story to find the source, and the intermediate pathways by which the virus can breach that barrier to humans. (thenakedscientists.com)
Habitat loss and food shortages have pushed bats into closer proximity to horses and humans, fueling Hendra virus spillover, a new study suggests. (medworm.com)
If a FELIX-type activity also can be found in humans, the question is whether one could create a therapy that would disable it and thus disarm the virus,' Overbaugh says. (fredhutch.org)
Western experts on an initial WHO-led mission to Wuhan at the beginning of the year said the virus likely jumped from bats to an intermediate animal before being transmitted to humans. (yahoo.com)
Zika virus is transmitted to humans by infected mosquitoes which causes mild fever with maculopapular rash. (medindia.net)
Unlike humans, viruses do not have a genetic repair system," says Henrik Salje. (medindia.net)
First off, the synthetic virus is harmless, at least to humans. (iflscience.com)

Scientists found these dynamics can explain several recent outbreaks of Ebola, including the largest one nearly a decade ago in Guinea, which scientists believe started after a toddler played in a tree that was home to a large colony of bats. (propublica.org)
Luo would later co-author another paper, on the persistence of Ebola virus in bodily fluids, and is currently working with scientists in the lab on research aimed at harnessing CRISPR (a family of DNA sequences) tools for their antiviral potential. (harvard.edu)
Her senior thesis explored the structure and evolution of Ebola virus RNA and has helped shed new light on how the virus interacts with its host. (harvard.edu)
Research published today by a team of Army scientists sheds light on the mechanism of sexual transmission of filoviruses, including Ebola and Marburg virus, which have been shown to persist in the testes. (outbreaknewstoday.com)
MERS-Cov is a zoonotic virus and the Ebola Virus Disease (EVD) and ties that have surrounded the virus since the evidence suggests that human infec- also from the last hospital outbreak in it emerged. (who.int)
Since the emergence of Ebola virus disease (EVD) in West Africa in 2013 the world has seen a constant surge of EVD outbreaks in Central and Western African countries. (who.int)
Rather, it is now clear that Ebola virus can persist for several years in immune privileged body sites of disease survivors, and that human-to-human transmission from a survivor to a naïve individual can ignite a new outbreak. (who.int)

CHICAGO (Reuters) - A new study sheds light on how the mosquito-borne Zika virus causes a rare neurological condition, and the findings could have implications for companies working on Zika vaccines, U.S. researchers said on Wednesday. (medscape.com)
In this interview, Victoria shares insights into her research findings, sheds light on the unique dynamics of pursuing an industrial Ph.D. and offers valuable guidance for aspiring students aiming to bridge the gap between academia and industry. (lu.se)

Shawna was an editor at The Scientist from 2017 through 2022. (the-scientist.com)

However, it has been unclear whether there represented a true absence of the virus in the region or if outbreaks have simply not been detected. (medindia.net)
This list features movies about virus outbreaks that you can binge on various streaming services like Netflix, Hulu, Amazon Prime, YouTube, etc., to alleviate any fears you may have about the outbreak and also entertain you. (cinemashed.com)

Once airborne, viruses in these tiny droplets can survive for hours. (livescience.com)
An infected person will produce thousands of tiny droplets which contain the virus every time they cough. (sciencealert.com)

However, because other diseases transmitted sexually can be passed between female sex partners, it is possible that Zika virus could be transmitted this way. (cdc.gov)
Briefly, among the currently available reports of sexual transmission of Zika virus, the longest period from symptom onset in the index case to potential sexual transmission to a partner was between 32-41 days. (cdc.gov)
New study throws light on the circulation of the Zika virus in Thailand. (medindia.net)
In an attempt to shed light on Zika circulation, scientists from the Institut Pasteur and the CNRS, in collaboration with US teams and the Thai National Institute of Health, decided to investigate the history of the Zika virus in Thailand. (medindia.net)
Zika virus has been silently circulating in Thailand for at least 16 years and probably longer. (medindia.net)
By producing a phylogenetic tree of the Zika virus in Thailand, the scientists discovered that the viral strains within Thailand were genetically very different from each other, and their ancestor seems to have appeared in the country in 2002. (medindia.net)
The first is that changes may have occurred to the Zika virus - and its transmissibility - when the virus migrated to South America. (medindia.net)
An autopsy showed inflammation and erosion of the protective sheath known as myelin in two nerves, but no evidence of the Zika virus in nerve cells. (medscape.com)

Dengue fever is a mosquito-borne viral disease caused by 1 of 4 antigenically distinct dengue flaviviruses: dengue virus 1 (DEN-1), dengue virus 2 (DEN-2), dengue virus 3 (DEN-3), and dengue virus 4 (DEN-4). (medscape.com)
The circulation of the dengue virus for the past sixty years in South-East Asia is relatively well known. (medindia.net)

As the name suggests, this virus is closely related to the smallpox virus. (iflscience.com)

To follow the evolution of cough, scientists use elaborate setups that reveal how much saliva is expelled and where it goes. (livescience.com)
The child may have touched something contaminated with saliva or waste from an infected bat, then put his hands in his mouth, inadvertently giving the virus a foothold. (propublica.org)

Researchers have provided new insight on the geographical origins and global spread of two classes of the hepatitis B virus (HBV), according to a study in eLife . (tunisiesoir.com)
Over the course of the study, the hospitals where these children stayed continued to test them every three days on average, providing a picture of how long viral shedding continues over time. (scitechdaily.com)
Lastly, Drs. DeBiasi and Delaney point out, the study only tested for viral shedding from the respiratory tract even though multiple studies have detected the virus in other bodily fluids, including stool. (scitechdaily.com)
This means the immunization of the upper respiratory tract through a nasal spray can prevent individuals from spreading the virus and developing infections elsewhere in the body,' said study author Muhammad Munir, a Lancaster University virologist. (healthday.com)
A species of marine phytoplankton that explodes after contracting a virus may play a role in regulating Earth's climate, a new study finds. (cosmosmagazine.com)
So for this study, we looked to a different version of the virus, which would allow neurons to live much longer. (technologynetworks.com)
Our study demonstrates the first case of ACE2 usage in MERS-related viruses, shedding light on a potential bio-safety threat of the human emergence of an ACE2 using "MERS-CoV-2" with both high fatality and transmission rate," they said. (ndtv.com)

The moment in which a virus jumps from an animal to a human is called spillover. (propublica.org)

While viruses often evolve very rapidly - sometimes in just days -researchers suggest that this ancient strain of HBV has changed little over the last 450 years and that the evolution of this virus is complex. (newswise.com)
Researchers suggest that the underline the importance of studying ancient viruses. (newswise.com)
In those who became infected, it took about 42 hours for the virus to become detectable in the throat, the researchers report. (the-scientist.com)
Using the rabies strain normally reserved for inoculations, Salk researchers led by Edward Callaway found a way to control the virus' spread by manually tweaking its ability to jump from cell to cell. (technologynetworks.com)

Apart from its relevance for feline health, this discovery helps us understand how hepatitis viruses - which can be deadly - are evolving in all species," Professor Beatty concluded. (edu.au)
Bats that experience food shortages due to climate change and habitat loss end up roosting in urban settings, where they shed more of the deadly Hendra virus. (medworm.com)
The LayV is part of the same family as the deadly Hendra and the Nipah viruses. (medworm.com)

In the recent decades, with exponential advancement in the fields of genomics, molecular biology, and virology, several scientists on this quest have taken to looking into the evolutionary twists and turns that have resulted in eukaryotic cells, the type of cell that makes up most life forms today. (sciencedaily.com)
Independent phylogenetic analyses suggested that genes had been transferred between these viruses and eukaryotic cells as they interacted at various points down the evolutionary road, in a process called "lateral gene transfer. (sciencedaily.com)
Understanding the evolutionary history of viruses may shed some light on this interesting topic. (sciforums.com)
This categorization can guide multiple downstream applications, such as drawing evolutionary trees of novel viruses, in addition to predicting their possible host interactions. (springernature.app)

Further, unlike other viruses, it does not construct its own enclosed "viral factory" in the cytoplasm of the cell within which to replicate its DNA and contains none of the genes required to carry out the replication process. (sciencedaily.com)
Because of these limitations, viruses can replicate only within a living host cell. (sciforums.com)
In several tests, the super-powered strain, dubbed Syn61.Δ3(ev5), fought off a myriad of viruses that need to hijack the cell's genetic machinery to replicate. (singularityhub.com)

All coughs contain miniature droplets, and if a person is infected, the droplets may contain viruses. (livescience.com)
Even if the droplets hit a surface, the viruses can survive and still spread disease if the droplets become airborne later. (livescience.com)
Once they are breathed in, the droplets settle onto cells at the back of the throat, where the virus attempts to enter these cells and begin replicating. (livescience.com)
Thanks to the remarkable work done by a WHO-coordinated network of scientists from 11 laboratories in 10 countries, it has been possible to develop a test to identify the virus which is transmitted by droplets of the cough or sneeze of infected persons. (who.int)

Citation: Wessner, D. R. (2010) The Origins of Viruses. (sciforums.com)
Contemplating the origins of life fascinates both scientists and the general public. (sciforums.com)
Australia faced the wrath of China after Prime Minister Scott Morrison made an early call for independent investigations into the origins of the virus - fuelling the fallout between the two countries. (yahoo.com)

We are pretty sure that there were no strains circulating in South America before 2013 and that the virus has now largely gone" explains Henrik Salje. (medindia.net)
however, the Black Creek Canal virus and the Bayou virus of the southeastern United States, as well as the Andes virus of South America, have been linked to renal failure and share some similarities with HFRS. (medscape.com)

A person with Zika can transmit the virus to his or her partner(s) through vaginal sex, anal sex, and likely oral sex. (cdc.gov)

Previous scientific analysis of the 16th century remains-which did not include DNA testing-suggested the child was infected with Variola virus, or smallpox. (newswise.com)
The smallpox virus was responsible for millions upon millions of deaths and plenty more ruined lives ever since it first emerged several thousand years ago. (iflscience.com)
A group convened by the World Health Organization (WHO) a couple of years back suggested that, despite the fact that it has been officially eliminated, anyone with the right skill set could manufacture the smallpox virus in a laboratory and release it into a population again. (iflscience.com)
Overall, the Committee judged that significant progress had been made during the past year, particularly in further characterization of the isolates held in the two collections, the development of diagnostic tests for smallpox, and in understanding the genomic diversity of variola virus. (who.int)

Viruses are "packets" of DNA or RNA and cannot survive on their own. (sciencedaily.com)
Writer and director Danny Boyle changed the zombie genre forever with 28 Days Later , in which a handful of survivors come together a month after a mysterious virus has decimated the U.K. and try to survive long enough to be rescued. (cinemashed.com)

Johnson stressed that this is not a threat to public health, explaining that the virus is inactive once it passes through the gastrointestinal tract. (wnct.com)
Is Langya Henipavirus, LayV, A New Virus Threat? (medworm.com)

Non-variola virus orthopoxviruses retained in the CDC collection should not be included in the inventory and should be either held separately, in the biosafety level 4 facility, or destroyed. (who.int)
Of the 120 strains of variola virus in the collection held at VECTOR in the Russian Federation, 55 isolates had been tested for viability and 32 could be propagated. (who.int)

According to project leader and lead author of the Nature Medicine publication, IBN Research Scientist Dr Juergen Pipper, "With our device, medical or humanitarian aid workers would be able to detect the presence of the H5N1 virus directly from throat swab samples on-site in less than half an hour. (medicalxpress.com)
Benjamin Moritz, a senior research scientist at Charles River, has been incorporating digital PCR into his work for the past two years. (genomeweb.com)

At the time, Johnson said there was not much data available on the genetic material of the virus. (kxan.com)

From face masks to social distancing, from antivirals to vaccines, these measures are predicated on the assumption that tiny viruses can cause serious illness and that such illness is transmissible person-to-person. (westonaprice.org)

scientists finally were able to confirm the presence of immunoglobulin G (IgG) antibodies to SNV in the victim's serum in September of 1994. (medscape.com)

How did viruses evolve? (sciforums.com)
Likewise we probably all realize that viruses evolve over time. (sciforums.com)

Most notably, viruses differ from living organisms in that they cannot generate ATP. (sciforums.com)

China has also faced continued speculation the virus was leaked from the Wuhan Institute of Virology, a theory which WHO chief Tedros Adhanom Ghebreyesus said needed further investigation earlier this year. (yahoo.com)

SIMON: Do scientists know why the delta variant seems to be more transmissible than the original strain? (tpr.org)
As an inoculation strain, this older rabies virus had evolved to kill neurons while sparing the organism. (technologynetworks.com)
Working with acclaimed virologist Matthias Schnell, PhD, and his team at Thomas Jefferson University, the scientists took this strain of rabies and essentially neutered the virus so that it would still spread but without killing the organism. (technologynetworks.com)

The virus is usually spread by the fecal-oral route. (wikipedia.org)
This is a major development that enables surveillance of the spread of the virus through Australian communities," UQ health sciences Professor Kevin Thomas said. (yahoo.com)
Dr Swan earlier this month warned Australians the virus could also be spread through sweat, and encouraged people to keep their distance when in areas highly populated by joggers. (yahoo.com)
The, you know, I don't need to tell you that with other viruses where we clearly see that they spread in a completely different way. (21stcenturywire.com)
To be sure, it's unclear whether handling money is likely to spread the virus. (bostonglobe.com)
We can use the little errors that emerge during viral replication to piece together the historical spread of viruses. (medindia.net)
Soon more cases are reported as the virus begins to spread. (cinemashed.com)

This spring, Johnson found another cryptic in Columbus's sewer shed. (kxan.com)
I found the following, obviously reputable paper on viruses. (sciforums.com)
The virus, named Langya henipavirus or LayV, was found thanks to an early detection system for feverish people with a recent history of exposure to animals in eastern China. (medworm.com)
The RNA fragments they found would have been shed by infected people in the region. (yahoo.com)

The body's natural defenses are designed to eliminate infections, and whether someone will fall ill depends on how much virus is breathed in and whether the person's immune system has encountered that virus previously, said Julian Tang, a clinical virologist in Singapore. (livescience.com)
Future studies may also shed light on how HIV reaches the brain and how the infected cells escape destruction by immune cells, which may suggest more treatment strategies. (bvsalud.org)

New research points to a surprising way to stop spillovers of Hendra virus, which is harbored by bats. (medworm.com)

Once an individual is infected, the virus gains foothold by undergoing a series of genetic mutations designed to invade new sets of receptors, allowing it to continually evade detection, attack, and ultimately shut down the body's defenses. (fredhutch.org)

While the virus was detectable for an average of about two-and-a-half weeks in the entire group, a significant portion of the children - about a fifth of the asymptomatic patients and about half of the symptomatic ones - were still shedding virus at the three-week mark. (scitechdaily.com)

Scientists have discovered hepadnavirus in an immunocompromised cat - and subsequently in banked samples - the domestic cat hepadnavirus is in the same family as hepatitis B virus of people. (edu.au)
The two people the WHO sent were just the advance party for a much bigger group of scientists leaving soon for Wuhan, to start asking hard questions. (thenakedscientists.com)
Because so many people are infected with HIV, all of us who share our fragile humanity are also affected--if not by the virus itself, then by those devastating companions of AIDS--fear, loss, sorrow, denial, and prejudice. (cdc.gov)
People excrete the virus even if they never seek testing or treatment. (cdc.gov)

Nipah and Hendra Virus are two dangerous emerging pathogens that may cause serious damage if left unchecked. (medworm.com)
During her research career, she focused on human and animal virus pathogens, with the goal of better understanding their mechanism of entry into cells and replication in order to develop new and better treatments. (sciencemediahub.eu)
On the other, because organisms share the same universal code, they're vulnerable to outside attacks from viruses and other pathogens-and can transfer their new capabilities to natural organisms, even if it kills them. (singularityhub.com)

Williams urged dog owners to remain patient and calm until scientists identify the disease. (kfvs12.com)
Over the next month, a highly effective collaboration ensued between the Indian Health Service, the University of New Mexico School of Medicine, and the Centers for Disease Control and Prevention, leading not only to the successful isolation of the virus, but also to the identification of the reservoir and vector for the disease, Peromyscus maniculatus (deer mouse). (medscape.com)
About 20 viruses have been identified within the genus Hantavirus, family Bunyaviridae, but only 11 have been shown to cause human disease. (medscape.com)
Finally, the cure principle intends to foster the development of post-exposure therapies that would help to reduce disease mortality as well as to reduce virus transmission. (who.int)

In addition, recent discoveries have challenged the current epidemiological model of EVD in which the virus is introduced in a community of naïve individuals via zoonotic spillover. (who.int)

Anatomy8

Organisms110

Diseases19

Chemicals and Drugs28

Analytical, Diagnostic and Therapeutic Techniques and Equipment20

Psychiatry and Psychology2

Phenomena and Processes34

Disciplines and Occupations11

Anthropology, Education, Sociology and Social Phenomena7

Technology, Industry, Agriculture1

Humanities10

Information Science9

Named Groups4

Health Care12

Geographicals1

Infect7

Coronavirus9

Feces2

Asymptomatic individuals2

Infectious11

Variants4

COVID19

Pathogen5

Wastewater4

Contagious2

Infection16

Vaccine8

Symptoms1

Influenza2

Dangerous viruses3

Particles7

20181

Potentially3

Feline immun1

Duration2

Genome6

Bacteria4

Infects1

Pandemic2

Humans10

Ebola7

Findings2

20171

Outbreaks2

Tiny droplets2

Zika Virus8

Dengue virus2

Suggests1

Saliva2

Study7

Called spillover1

Researchers4

Deadly3

Evolutionary4

Replicate3

Droplets4

Origins3

South America2

Transmit the virus1

Smallpox4

Survive2

Threat2

Variola2

Research scientist2

Genetic material of the virus1

Vaccines1

Antibodies1

Evolve2

Notably1

Virology1

Strain3

Spread7

Found4

Immune2

Bats1

Foothold1

Detectable1

People4

Pathogens3

Disease4

Zoonotic1