Antibody seroepidemiologic studies. Medical search. Frequent questions

We studied the prevalence of PARV4 antibodies in 2 cohorts of HIV- and HCV-infected individuals (n = 469) and the correlations with disease status. (ox.ac.uk)
Al-Nakib W, Llovd G. El-Mekki A, Plan G, Beeson A, Southee T. Preliminary report on arbovirus-antibody prevalence among patients in Kuwait: evidence of Congo/Crimean virus infection. (health.mil)
Prevalence of IgM antibodies to SARS-CoV-2 was 31.4% in COVID-19 patients, 1.5% in healthcare providers, 1.3% in general workers, and 0.2% in other patients. (researchgate.net)
We estimated the population prevalence of antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), including unreported infections, through a Korea Seroprevalence Study of Monitoring of SARS-CoV-2 Antibody Retention and Transmission (K-SEROSMART) in 258 communities throughout Korea. (e-epih.org)
Prevalence of SARS-CoV-2 Antibodies From a National Serosurveillance of Kenyan Blood Donors, January-March 2021. (ox.ac.uk)
The association between the prevalence of antibodies against Kaposi's sarcoma-associated herpesvirus (KSHV or human herpesvirus 8 [HHV-8]) and sociodemographic, sexual, reproductive and lifestyle factors was investigated in a study of adults presenting with cancer at hospitals in Kampala, Uganda. (richarddollconsortium.org)
The prevalence of anti-KSHV antibodies decreased with increasing number of older siblings, although this may be due to chance (p = 0.05) and was higher among people who had ever been married (p = 0.03). (richarddollconsortium.org)
In conclusion, in this population in Uganda, where KSHV is relatively common, the prevalence of anti-KSHV antibodies increased with age but showed little association with nearly 50 other factors studied. (richarddollconsortium.org)
Prevalence and persistence of Chlamydia trachomatis-specific antibodies after occasional and recurrent infections. (ppshp.fi)
This study estimated the nationwide, age- and area-adjusted anti-HAV prevalence from 2005 to 2009. (e-cmh.org)
Our objective was to estimate the prevalence of SARS-CoV-2 antibodies in Chile and model its spatial risk distribution. (biomedcentral.com)
Conclusions: As it was previously reported by the World Health Organization (WHO) on HAV infection in the country, this study revealed a high prevalence of HAV infection in Mashhad. (razavihospital.ir)
To examine prevalence changes and risk factors for canine leishmaniasis, we conducted a cross-sectional seroprevalence study and a survey during April-June 2006. (cdc.gov)
This study aimed at studying the tends of the prevalence of "zerodose" children from 2000 to 2017 and making predictions for 2030. (bvsalud.org)

Many studies have been performed around the world to estimate the numbers of individuals infected with HSV-1 and HSV-2 by determining if they have developed antibodies against either viral species. (wikipedia.org)
Men who provide traditional viral RNA for confirmation of HCV infections are a serious global public barber services were identified and en- infection. (who.int)
This study highlights the value of rapid, onboard diagnostic testing to quickly identify an outbreak and enumerate cases, as well as the serological testing to flag potential cases missed with standard viral case identification methodologies. (health.mil)
These findings are consistent with a Norwegian study that reported detection of HBoV alone and a high-viral-load were associated with respiratory tract infection. (datexis.com)
In that study, patients with a high-viral-load in NPAs developed viremia more frequently than the patients with a moderate-or a low-viral-load did. (datexis.com)
In our study, HBoV-positive patients in the high-viral-load group showed significantly higher pulse rates and respiratory rates than the in the low-viral-load group. (datexis.com)
General epidemiological parameters of viral hepatitis A, B, C, and E in six regions of China: a cross-sectional study in 2007. (razavihospital.ir)

ABSTRACT A cross-sectional seroepidemiological study was conducted in the Rabat-Salé-Zemmour-Zaër region of Morocco in 2007 among 267 barbers and 529 clients, all men with no history of hepatitis B (HBV) vaccination. (who.int)
The objective of this study was to identify the most suitable vaccination strategy for controlling the surge in COVID-19 cases. (e-epih.org)
In a potential epidemic of an emerging infection, representative population-based serologic studies are required to determine the extent of immunity to the infectious agent, either from natural infection or vaccination. (biomedcentral.com)
In the context of a possible epidemic, where public health response and planning, policy decisions and pandemic preparedness strategies are required, population-based, longitudinal serologic studies are necessary, both to determine the extent of immunity - either naturally acquired or from vaccination-and to evaluate the pace of infection and immunity acquisition [ 2 , 3 ]. (biomedcentral.com)
Objective: To study the link between coronavirus disease 2019 (COVID-19) vaccination status and adherence to public health and social measures in Members of the Eastern Mediterranean Region and Algeria. (bvsalud.org)
En conséquence, un programme de vaccination pourrait s'imposer comme une nouvelle stratégie de lutte contre la maladie dans la wilaya de Sétif. (bvsalud.org)
BACKGROUND: Passively acquired maternal antibodies are necessary to protect infants against circulating measles virus until they reach the eligible age of vaccination. (hal.science)
This study was undertaken to (1) assess the presence of maternally acquired measles-specific IgG antibodies among infants less than 9 months of age in Bangui, Central African Republic and (2) determine the immune status of vaccination-age children and the concordance with reported vaccination status. (hal.science)
The presence of IgG-specific measles antibodies varied among children of vaccination age, from 57.3% for children aged 9 months to 5 years, to 50.6% for children aged 6-9 years and 45.6% for chidren aged 10 years and above. (hal.science)

The moderate risk of RESTV recurring among humans in the Philippines and its potential pathogenicity in humans reinforces the need for early detection, surveillance and continued studies of RESTV pathogenesis and its health consequences. (who.int)

The presence of antibodies to HTLV-I or HTLV-II indicates that a person is infected with the virus. (cdc.gov)
Blood samples were analyzed for the presence of antibodies to spike proteins (anti-S) and antibodies to nucleocapsid proteins (anti-N) SARS-CoV-2 proteins using an electrochemiluminescence immunoassay. (e-epih.org)
0.05) between the presence of antibodies against KSHV and other sexual and reproductive factors. (richarddollconsortium.org)

The absence of antibodies from a prior oral HSV-1 infection leaves these individuals susceptible to herpes whitlow, herpes gladiatorum, and HSV-1 genital infection. (wikipedia.org)
Background It is to be determined whether people infected with SARS-CoV-2 will develop long-term immunity against SARS-CoV-2 and retain long-lasting protective antibodies after the infection is resolved. (researchgate.net)
After SARS-CoV-2 infection, people are unlikely to produce long-lasting protective antibodies against this virus. (researchgate.net)
This information is in contrast to a study in Wuhan, China that found 10% of patients lost SARS-CoV-2 antibodies within weeks of infection (12) , although different serology tests were used in this case. (researchgate.net)
In August 2022, most of the Korean people had antibodies to COVID-19, and one in three people was estimated to have an unreported infection. (e-epih.org)
With the improvement of the sanitary condition associated with the current economic development, the nationwide infection of HAV was reduced significantly while young adults and adolescents aged less than 40 years became more vulnerable to the infection because most of them do not have the protective antibody following natural infection. (e-cmh.org)
Within a seroepidemiologic study to determine the true burden of SARS-CoV2 infection in two Bay Area counties, we evaluated whether letter (L) or postcard (P) invitations with reminders were more effective at recruiting participant households. (biomedcentral.com)
We implemented a series of seroepidemiologic studies to determine the true burden of SARS-CoV2 infection in two Bay Area counties in California, and anticipated that response rates to an unsolicited invitation to participate in serologic testing for SARS-CoV2 would likely have a better response than that typical for unsolicited mailings, purported to range from 2.7% to 4.4% [ 13 ]. (biomedcentral.com)
suggested that HBoV infection might develop only once because of the subsequent development of life-long immunity conferred by neutralizing antibodies produced in response to the infection. (datexis.com)
Previous studies have reported that HBoV infection was more prevalent among individuals who had other respiratory viruses [10, 22]. (datexis.com)
Recent studies provided evidence on the relationship between social status and exposure patterns, the likelihood of diagnosis, and infection outcomes for COVID-19 in Santiago. (biomedcentral.com)
Thus, seroprevalence studies identify the infection burden in communities leading to more appropriate control measures for local epidemic expansion. (biomedcentral.com)
Infection rates are similar in both sexes, though some studies have noted a slight male predominance [2]. (webmedcentral.com)
Exposure to HAV infection in patients with chronic liver disease in Italy, a multicentre study. (razavihospital.ir)
Seroprevalence and risk factors of hepatitis A virus infection in Iran: a population based study. (razavihospital.ir)

The Borrelia assay is a 2 hour, 96-well indirect ELISA for the qualitative or quantitative determination of Borrelia IgM antibodies in human serum, plasma and CSF samples. (bmgrp.com)
As demonstrated in Table 3, there was no significant correlation between days of symptom onset to collection of serum and antibody index/ratio to suggest waning of antibodies during the time period tested. (researchgate.net)
Serum antibodies were analysed using Medac Ct IgG ELISA test. (bmj.com)
PROCEDURES: Serum samples were evaluated for specific antibodies against Borrelia burgdorferi by use of 3 serologic assays. (tamu.edu)
RESULTS: Of 353 serum samples from dogs in 18 counties in 2005, only 2 (0.6%) contained western blot analysis-confirmed antibodies against B burgdorferi. (tamu.edu)
Serum samples were tested for total anti-HAV antibodies using the Enzyme-Linked Immunosorbent Assay (ELISA) kit. (razavihospital.ir)
The presence in a given individual is determined by the finding of HIV antibodies in the serum (HIV SEROPOSITIVITY). (bvsalud.org)

The Bus Santé is a study of a yearly sample of the Geneva canton population that includes 500 men and 500 women who fill standardized questionnaires covering risk factors for chronic diseases, sociodemographic, occupational, and educational histories. (acc.org)
BACKGROUND: Previously studied risk factors for rotavirus vaccine failure have not fully explained reduced rotavirus vaccine effectiveness in low-income settings. (cdc.gov)

High seroincidences of S. Typhimurium and S. Enteritidis LPS were observed, and infants born with higher anti-LPS titers had greater plasma bactericidal activity and longer protection from seroconversion.ConclusionsAlthough Vietnamese infants have extensive exposure to NTS, maternally acquired antibodies appear to play a protective role against NTS infections during early infancy. (ox.ac.uk)
The aim of this study was to establish a relationship between the incidence of cataract and evidence of bacterial infections transmitted by ticks. (medscimonit.com)
Serological studies have shown that infections caused by B. burgdorferi sensu lato and Bartonella sp. (medscimonit.com)
There were no statistically significant differences in the seroprevalence of antibodies against any of the HPV types examined between incident cases and controls, nor was there a difference in the seroprevalence of multiple infections. (ox.ac.uk)
Conclusions- Exposure to CMV but not to C pneumoniae , H pylori , or HAV was associated with a slight excess risk of subsequent myocardial infarction, stroke, or CV death in HOPE study patients, and total pathogen score based on these infections predicted a small increased hazard of CV events. (mcmaster.ca)
Seroepidemiology of hepatitis A virus infections in Over 6-years population in Isfahan-Iran: A community-based study. (razavihospital.ir)
RÉSUMÉ Une forte prévalence des infections par les virus de l'hépatite B et C a été signalée dans des groupes de patients spécifiques en Libye et une enquête a par conséquent été préparée pour évaluer l'étendue du problème à l'échelle nationale. (who.int)

CONCLUSIONS: The unique data set collected in this study highlights how regional epidemiology data for HBV can provide insights into patterns of transmission, and it provides an evidence base for future quantitative research into the most effective local interventions. (ox.ac.uk)

Enrollees and their household members underwent weekly testing for anti-SARS-CoV-2 immunoglobulin G (IgG) antibodies targeting the spike protein with the Euroimmun enzyme-linked immunosorbent assay (ELISA) (93% sensitivity and 100% specificity), between April 6 and May 9, 2020. (acc.org)

In addition, the licensed screening tests, which use HTLV-I antigens, vary in their sensitivity to detect antibodies to HTLV-II (4,5). (cdc.gov)

However, it has been previously shown that more severe disease produces a stronger antibody response, and thus our mild disease cohort may result in a lower sensitivity (26). (researchgate.net)

The ability to detect antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is currently under investigation with various performance characteristics and indications for use. (researchgate.net)

Exposure to the dominant NTS serovars, Salmonella enterica serovars Typhimurium and Enteritidis, were assessed using lipopolysaccharide (LPS) O antigen-specific antibodies. (ox.ac.uk)
Waning of transplacentally acquired NTS LPS-specific antibodies at 4 months of age left infants susceptible to Salmonella organisms, after which they began to seroconvert. (ox.ac.uk)
Sera from patients and the control group were subjected to serological tests to search specific antibodies to the bacteria. (medscimonit.com)
Specific antibodies to B. burgdorferi sensu lato and Bartonella sp. (medscimonit.com)

Antibody dynamics, the role of maternally acquired antibodies, and NTS seroincidence rates were modeled using multivariate linear risk factor models and generalized additive mixed-effect models.ResultsTransplacental transfer of NTS LPS-specific maternal antibodies to infants was highly efficient. (ox.ac.uk)

Before 1990, most Koreans were infected with HAV before they were in their 20s and over 90% of the public already had protective antibodies in their 20s, so the incidence rate of symptomatic hepatitis A in adult population was low. (e-cmh.org)

Antibodies to B. burgdorferi were found in 25 (13.5%) of 185. (johnshopkins.edu)

METHODS: In this study, we present the results of a serological screening of the healthcare workers (HCWs) on a ward for infectious diseases in Sweden with a point-of-care antibody test 8 weeks after an outbreak of COVID-19. (lu.se)
Methods Participants (n=5158, aged 15-59 years) were included from three independent nationwide population-based serosurveillance studies in 1996, 2007 and 2017. (bmj.com)
molecular diagnostic methods were used for the detection of other respiratory viruses in the other studies whereas we used virus culturing. (datexis.com)
Methods and Results- We analyzed enrollment sera from 3168 Canadian patients in the Heart Outcomes Prevention Evaluation (HOPE) study for antibodies to C pneumoniae , H pylori , CMV, and HAV and measured the relation between serostatus and 494 adjudicated trial outcomes of myocardial infarction, stroke, or CV death over 4.5 years of follow-up. (mcmaster.ca)
Patients and Methods: A cross-sectional study was performed on 1563 randomly selected individuals from general population of Mashhad, Iran, between May and September 2009. (razavihospital.ir)
METHODS: Observational study among adults (≥18 years) within six US cohorts from March 1, 2020 to August 31, 2020 using data from electronic health record and patient reporting. (bvsalud.org)

Furthermore, this study lays the foundation for a surveillance system to continuously monitor transmission at the community level and the response to COVID-19. (e-epih.org)

This is the earliest documented COVID-19 study with RT-PCR, serology, and pre-exposure test data on the entirety of the exposed population (n=333). (health.mil)

In addition, antibody detection may provide a complementary perspective, along with RT-qPCR testing, in the diagnosis of COVID-19 (24,25). (researchgate.net)
In a study performed in Hong Kong, a higher detection rate of HBoV was observed in NPAs positive for common respiratory viruses than in those that were negative for the same. (datexis.com)
However, in our study, similar detection rate of HBoV was observed in the samples positive and negative for other respiratory viruses in the R-mix culture (Data are not shown). (datexis.com)

The Role of Maternally Acquired Antibody in Providing Protective Immunity Against Nontyphoidal Salmonella in Urban Vietnamese Infants: A Birth Cohort Study. (ox.ac.uk)

Half-life method represents constant log linear antibody contraction with an estimated peak total nucleocapsid antibody level that had a cutoff index of 37 and a half-life of 128 days. (cdc.gov)

Socio-economic factors and the outcomes of this seroprevalence study enable us to identify priority areas for intervention. (biomedcentral.com)
Taghavi SA, Hosseini Asl MK, Talebzadeh M, Eshraghian A. Seroprevalence study of hepatitis A virus in Fars province, southern Iran. (razavihospital.ir)

Samples were analyzed for the presence of measles-specific IgG antibodies using commercial ELISA kits. (hal.science)

A seroepidemiological study was carried out in Switzerland to define the population susceptible to rubella among women of childbearing age. (nih.gov)
IgG antibodies to rubella virus were determined in 9,046 women giving birth between 1 August 1990 and 30 September 1991 in 23 of 26 Swiss cantons. (nih.gov)
Seroprevalence of measles and natural rubella antibodies among children in Bangui, Central African Republic. (hal.science)
A secondary objective was to describe the presence of rubella-specific IgG antibody in the study population. (hal.science)

The discrepancies corresponded to very low titres of antibodies as measured by HAI. (nih.gov)
Among the 302 patients with anti-KSHV antibodies, the proportion with high titres increased linearly with increasing age (p = 0.03) and was higher among those reporting having had a blood transfusion (p = 0.03). (richarddollconsortium.org)

Age-specific seroprevalence of anti-hepatitis a antibody among 1-30 years old population of savadkuh, mazandaran, iran with literature review. (razavihospital.ir)
The seroprevalence of anti-hepatitis A antibodies (corresponding to the immunization rate) was 100% in Sétif, in people aged between 10 and 14 years in 1986. (bvsalud.org)

1 in 10 people in Switzerland are estimated to have detectable antibodies against SARS-CoV-2. (acc.org)
The study estimates 1 in 10 people have developed detectable antibodies against SARS-CoV-2 in Switzerland. (acc.org)

Seroprevalence studies provide an accurate measure of SARS-CoV-2 spread and the presence of asymptomatic cases. (biomedcentral.com)

Further and larger prospective studies are needed to clarify the role of HPV in the aetiology of cutaneous SCC. (ox.ac.uk)
Prospective studies of European HGE are needed. (johnshopkins.edu)

In a next step, the conjugate (HRP-conjugated rabbit anti-human IgM antibody) is pipetted into the wells and reacts with the anti-Borrelia IgM antibodies present in the sample. (bmgrp.com)

RESULTS: Six (8%) HCWs who were tested RT-PCR negative during the outbreak investigation had developed specific IgG antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). (lu.se)

Within the past 2 years, investigational peptide- and recombinant protein-based serologic assays that can more easily differentiate the antibodies to HTLV-I and HTLV-II have been developed (8,9). (cdc.gov)

We identified 96 studies representing 39 African countries, with a median cohort size of 370 participants and a median participant age of 34 years. (ox.ac.uk)
Sustained Cross-Reactive Antibody Responses After Human Papillomavirus Vaccinations: Up To 12 Years Follow-Up In The Finnish Maternity Cohort. (ppshp.fi)
In a prospective pilot study nested in the EPIC-Oxford cohort, we examined the seroprevalence of antibodies against the L1 antigen of 38 human papilloma virus (HPV) types among 39 cases of cutaneous squamous cell carcinoma (SCC) for whom plasma was collected prior to diagnosis (incident) and 80 controls. (ox.ac.uk)

This study presents an analysis of the factors associated with HTLV-I seroprevalence in the endemic area of Tumaco, Colombia. (johnshopkins.edu)

The study is constrained by gaps in the published data, such that we could not model the impact of antiviral therapy based on stratification by specific clinical criteria and our model framework does not include explicit age-specific or risk-group assumptions regarding force of transmission. (ox.ac.uk)
However, the time course for the development of antibodies before onset of clinical RA is unknown, nor is it known which antibody, or combinations of antibodies, might be most sensitive or specific for predicting future development of the disease. (nih.gov)
Overall, each model has its advantages and disadvantages and is differentially suited for studies of dengue pathogenesis and immunopathogenesis and/or pre-clinical testing of antiviral drugs and vaccines. (mdpi.com)

With some studies reporting a rapid loss of antibodies weeks after exposure to SARS-CoV-2, the seroprevalence might be an underestimate of the true exposure. (acc.org)

Since then, all donations of whole blood and blood components in the United States have been screened for antibodies to HTLV-I. The screening tests that were licensed, as well as the investigational supplementary tests used to confirm seroreactivity (Western immunoblot and radioimmunoprecipitation assay), do not reliably differentiate between antibodies to HTLV-I and the closely related HTLV-II. (cdc.gov)
Patients were interviewed and tested for antibodies against KSHV (using an indirect immunofluorescent assay). (richarddollconsortium.org)

Seroprevalence of Anti-SARS-CoV-2 IgG Antibodies in Geneva, Switzerland (SEROCoV-POP): A Population-Based Study. (acc.org)
Similar to other studies in Europe and the United States, SEROCoV-POP revealed a low seroprevalence to SARS-CoV-2 in Switzerland, despite being an area with a relatively high number of cases. (acc.org)

Other illnesses, on the other hand are observed to produce an antibody response in individuals' with mild disease. (stackexchange.com)
It is possible that there are unknown cases of mild non-encephalitic rabies that are self limited, but given the 150 years of intense study, I don't think it is likely there is a major aspect of the disease's natural history that hasn't been observed and reported. (stackexchange.com)

Screening for antibodies after an outbreak can help to find missed cases and better illuminate routes of transmission. (lu.se)

This might suggest that if HPV is involved in the aetiology of SCC, the process occurs close to the time of diagnosis, or that the antibody response observed in people with SCC is a consequence of tumor formation. (ox.ac.uk)

Organisms5

Diseases6

Chemicals and Drugs6

Analytical, Diagnostic and Therapeutic Techniques and Equipment6

Phenomena and Processes3

Information Science2

Health Care5

Prevalence14

Viral7

Vaccination9

Humans1

Presence of antibodies3

Infection15

Serum7

Risk Factors2

Infections7

Epidemiology1

Enzyme-Linke1

Antigens1

Sensitivity1

Detect antibodies1

Specific antibodies4

Maternal antibodies1

Adult1

Burgdorferi1

METHODS6

Surveillance1

Serology1

Detection3

Immunity1

Nucleocapsid1

Seroprevalence Study2

ELISA1

Rubella4

Titres2

Hepatitis2

Detectable2

Asymptomatic1

Prospective studies2

Borrelia1

Coronavirus1

Serologic1

Cohort3

Factors1

Clinical3

Exposure1

Assay2

Switzerland2

Mild2

Screening1

Response1