According to the United States Centers for Disease Control and Prevention (CDC), in humans the symptoms of the 2009 "swine flu" H1N1 virus are similar to influenza and influenza-like illness in general. (wikipedia.org)
The 2009 H1N1 virus is not zoonotic swine flu, as it is not transmitted from pigs to humans, but from person to person through airborne droplets. (wikipedia.org)
Notably, avian influenza A(H5N1), A(H5N6), A(H7N9), and A(H9N2) viruses, and swine-origin variant viruses A(H1N1)v, A(H1N2)v, and A(H3N2)v have resulted in novel human influenza infections globally. (cdc.gov)
Three influenza A virus (IAV) subtypes circulate globally in swine: H1N1, H1N2 and H3N2. (cdc.gov)
Subtyping revealed 34 (54.8%) viruses of the H1N1 subtype, comprising 30 (48.4%) H1avN1av viruses, 3 (4.8%) pH1N1av viruses, and 1 (1.6%) H1huN1av virus. (cdc.gov)
Abstract: Background: Influenza A virus (IAV) is endemic in pigs globally and co-circulation of genetically and antigenically diverse virus lineages of subtypes H1N1, H1N2 and H3N2 is a challenge for the development of effective vaccines. (embrapa.br)
Methods: This study evaluated the immunogenicity of a virosome-based influenza vaccine containing the surface glycoproteins of H1N1 pandemic, H1N2 and H3N2 in pigs. (embrapa.br)
Eurasian "avian-like" (EA) swine H1N1 and "human-like" H1N2, highlighting the importance of swine as adaptation host of avian to human IAVs. (bvsalud.org)
Nowadays, although of limited use, a trivalent vaccine, which include in its formulation H1N1, H3N2, and, H1N2 swine IAV (SIAV) subtypes, is one of the most applied strategies to reduce SIAV circulation in farms. (bvsalud.org)
[12] Nalika sasi April 2009 sawijining galur virus flu anyar ngalami évolusi kang ngandhut campuran gen saka flu manungsa , babi , lan unggas , kang ing awalé diarani " flu babi " lan uga ditepungi minangka influenza A/H1N1 , kang muncul ing Mèksiko , Amérikah Sarékat , lan sapérangan nagara liya. (wikipedia.org)
Around the mid-20th century, identification of influenza sub-types was made possible, allowing accurate diagnosis of transmission to humans. (wikipedia.org)
The ever-changing diversity of influenza viruses and the identification of influenza D emphasize the need for more virus surveillance. (cdc.gov)
Lineages1
Within each subtype, multiple hemagglutinin (HA) and neuraminidase (NA) lineages or clades cocirculate. (cdc.gov)
Neuraminidase1
Influenza A viruses are classified into subtypes based on the surface proteins hemagglutinin (HA) and neuraminidase (NA). (cdc.gov)
Pigs8
Swine influenza virus (SIV) or swine-origin influenza virus (S-OIV) refers to any strain of the influenza family of viruses that is endemic in pigs. (wikipedia.org)
Transmission of the virus from pigs to humans is rare, and does not always lead to human illness, often resulting only in the production of antibodies in the blood. (wikipedia.org)
People with regular exposure to pigs are at increased risk of swine flu infections. (wikipedia.org)
Direct transmission of a swine flu virus from pigs to humans is occasionally possible (zoonotic swine flu). (wikipedia.org)
For more information, see CDC's website What People Who Raise Pigs Need to Know about Influenza . (cdc.gov)
We also detected influenza D in pigs in the Netherlands. (cdc.gov)
Results: A robust humoral and cellular immune response was induced against the three IAV subtypes in pigs after two vaccine doses. (embrapa.br)
The evolutionary dynamics of SIAV quasispecies were studied in samples collected at different times from 8 vaccinated and 8 nonvaccinated pigs, challenged with H1N2 SIAV. (bvsalud.org)
Hemagglutinin1
The influenza virosome vaccine elicited hemagglutinin-specific antibodies. (embrapa.br)
Circulate1
Novel influenza refers to viruses with a subtype different from seasonal influenza, and usually is caused by influenza A viruses that circulate among animals. (cdc.gov)
Vaccine2
Virosomes are virus-like particles that mimic virus infection and have proven to be a successful vaccine platform against several animal and human viruses. (embrapa.br)
[15] Vaksin kanggo manungsa kang paling asring dipigunakaké ya iku vaksin influenza trivalen ( trivalent influenza vaccine [TIV]) kang ngandhut antigen kang wis dimurnèkaké lan diinaktivasi marang telung galur virus. (wikipedia.org)
H5N11
Galur unggas kang diarani H5N1 wis nimbulaké kakuwatiran munculé pandemi influenza anyar, sawisé kamunculané ing Asia nalika taun 1990-an, nanging virus mau durung évolusi dadi wangun kang nyebar kanthi gampang saka manungsa-menyang-manungsa. (wikipedia.org)
Respiratory tract2
Influenza is caused by infection of the respiratory tract with influenza viruses, RNA viruses of the Orthomyxovirus genus. (cdc.gov)
Most adults ill with influenza shed the virus in the upper respiratory tract and are infectious from the day before symptom onset to ≈5-7 days after symptom onset. (cdc.gov)
Pandemic1
During the coronavirus disease 2019 pandemic in 2020 and 2021, there was a sharp decrease in global influenza activity. (cdc.gov)
20211
During 2019–2021, we isolated 62 swine influenza A viruses in Belgium and the Netherlands. (cdc.gov)
IAVs2
From those samples, we obtained 62 swine IAVs by virus isolation in MDCK cells. (cdc.gov)
Influenza A viruses (IAVs) are characterized by having a segmented genome, low proofreading polymerases, and a wide host range. (bvsalud.org)
Intestinal tract1
Abstract: Coccidiosis is a disease caused by intracellular protozoan parasites of the genus Eimeria that affect the intestinal tract of poultry. (embrapa.br)
Genetically1
The mechanism by which latent viruses, such as genetically transmitted tumor viruses ( PROVIRUSES ) or PROPHAGES of lysogenic bacteria, are induced to replicate and then released as infectious viruses. (lookformedical.com)
Differential1
Any of the processes by which cytoplasmic factors influence the differential control of gene action in viruses. (lookformedical.com)
Seasonal5
Influenza viruses are classified into 4 types: A, B, C, and D. Influenza A and B viruses commonly cause illness in humans and seasonal epidemics. (cdc.gov)
Information about circulating seasonal viruses in various regions can be found on the Centers for Disease Control and Prevention (CDC) website or World Health Organization website. (cdc.gov)
Seasonal influenza viruses are rarely detected in blood or stool. (cdc.gov)
Infected swine shed the virus in nasal secretions and can transmit viruses to humans in the same way seasonal influenza viruses spread among people. (cdc.gov)
In subtropical and tropical regions, seasonal influenza epidemics follow a similar pattern, but influenza illnesses can occur throughout the year. (cdc.gov)
Illness3
Symptoms of zoonotic swine flu in humans are similar to those of influenza and of influenza-like illness and include chills, fever, sore throat, muscle pains, severe headache, coughing, weakness, shortness of breath, and general discomfort. (wikipedia.org)
Influenza type C infections generally cause mild illness and are not thought to cause human influenza epidemics. (cdc.gov)
Influenza D viruses primarily affect cattle and are not known to infect or cause illness in people. (cdc.gov)
Human1
these processes resulted in multiple genotypes with gene segments of swine, avian, and human origin. (cdc.gov)
Humans is rare1
Influenza A virus transmission from animals to humans is rare but possible. (cdc.gov)
Indirect transmission occurs when a person touches their face after touching a virus-contaminated surface (fomite). (cdc.gov)
Infected birds shed influenza virus in their droppings, mucus, and saliva, and transmission to humans can occur from direct contact with an animal (by touching an infected animal or by droplet spread) or contact with a sick animal's environment (by inhalation of airborne viruses or through fomite transmission). (cdc.gov)
Virus shedding is an important means of vertical transmission (INFECTIOUS DISEASE TRANSMISSION, VERTICAL). (lookformedical.com)
Protection provided by vaccines is not complete, allowing virus circulation, potentially favoring viral evolution. (bvsalud.org)
Animals2
Process of growing viruses in live animals, plants, or cultured cells. (lookformedical.com)
The nonsynonymous substitutions proportion found was greater in vaccinated animals suggesting that H1N2 SIAV was under positive selection in this scenario. (bvsalud.org)
Common3
The swine influenza virus is common throughout pig populations worldwide. (wikipedia.org)
In temperate regions, influenza epidemics are more common during cooler months, October-March in the Northern Hemisphere and April-September in the Southern Hemisphere. (cdc.gov)
The National Institute of Public Health collaborates with the municipal health service, the Norwegian Food Safety Authority, and the Norwegian Veterinary Institute to map whether patients can have a common source of infection. (ceezad.org)
Family1
A genus of the family HERPESVIRIDAE, subfamily ALPHAHERPESVIRINAE, consisting of herpes simplex-like viruses. (lookformedical.com)
Type1
The type species of ORTHOPOXVIRUS, related to COWPOX VIRUS , but whose true origin is unknown. (lookformedical.com)
Activity1
Substances elaborated by viruses that have antigenic activity. (lookformedical.com)
Risk1
The risk for influenza exposure during travel depends on the time of year and destination. (cdc.gov)
People2
An influenza virus that normally circulates in swine (but not people) but then is detected in a person is called a variant virus and is denoted with the letter v. (cdc.gov)
Children, immunocompromised people, and severely ill people might shed influenza virus for ≥10 days after symptom onset. (cdc.gov)
True1
Despite these apparently low numbers of infections, the true rate of infection may be higher, since most cases only cause a very mild disease, and will probably never be reported or diagnosed. (wikipedia.org)
Previously1
The retroviral vector backbone used in this study, pMSGV1, is definitely a derivative of the MSCV-based splice-gag vector (pMSGV), which uses a murine stem cell computer virus (MSCV) long terminal repeat and GLURC has been previously explained [31]. (biotechpatents.org)