نتایج جستجو برای: hemagglutination inhibition tests

تعداد نتایج: 659587  

Journal: :Journal of clinical microbiology 1975
M Probert S M Russell

A single radial hemolysis assay for parainfluenza-3 virus antibody is described as a simple, sensitive, accurate, and precise alternative to hemagglutination inhibition and serum neutralization tests. A highly significant correlation exists between single radial hemolysis zone areas and hemagglutination inhibition titers of both serum and nasal secretion samples. Antibody conversions equivalent...

2016
Vic Veguilla Hugo López-Gatell Irma López-Martínez Rodrigo Aparicio-Antonio Gisela Barrera-Badillo Julieta Rojo-Medina Felicia Liaini Gross Stacie N. Jefferson Jacqueline M. Katz Mauricio Hernández-Ávila Celia M. Alpuche-Aranda

BACKGROUND The 2009 H1N1 influenza pandemic initially affected Mexico from April 2009 to July 2010. By August 2010, a fourth of the population had received the monovalent vaccine against the pandemic virus (A(H1N1)pdm09). To assess the proportion of the Mexican population who remained potentially susceptible to infection throughout the summer of 2010, we estimated the population seroprevalence ...

Journal: :Clinical and vaccine immunology : CVI 2016
Mary Zacour Brian J Ward Angela Brewer Patrick Tang Guy Boivin Yan Li Michelle Warhuus Shelly A McNeil Jason J LeBlanc Todd F Hatchette

Standardization of the hemagglutination inhibition (HAI) assay for influenza serology is challenging. Poor reproducibility of HAI results from one laboratory to another is widely cited, limiting comparisons between candidate vaccines in different clinical trials and posing challenges for licensing authorities. In this study, we standardized HAI assay materials, methods, and interpretive criteri...

Journal: :The Journal of infectious diseases 2010
Kawsar R Talaat Michael E Greenberg Michael H Lai Gunter F Hartel Christine H Wichems Steven Rockman Robert J Jeanfreau M Rita Ghosh Martin L Kabongo Charmaine Gittleson Ruth A Karron

BACKGROUND When the novel H1N1 influenza A strain appeared in April of 2009, development of novel H1N1 vaccines became a public health priority. METHODS We conducted a phase‐2, multicenter, randomized, placebo‐controlled, observer‐blind clinical trial of a 2009 H1N1 vaccine in 1313 young (age, 18-64 years) and older (age, >or=65 years) adults. Participants were randomized 1:4:4:4 to receive 2...

2012
Fen Yang Jianfeng He Haojie Zhong Changwen Ke Xin Zhang Teng Hong Hanzhong Ni Jinyan Lin

BACKGROUND To evaluate the temporal trends of seroprevalence to pH1N1 among the Guangdong population following 2009 H1N1 pandemic wave, we conducted three cross-sectional serology surveys in 2010. METHODOLOGY/PRINCIPAL FINDINGS Three surveys were carried out consecutively in 2010 from January 8 to January 24, from March 15 to April 10 and from August 23 to September 4. Sample populations comp...

2012
Shailesh D. Pawar Babasaheb V. Tandale Chandrashekhar G. Raut Saurabh S. Parkhi Tanaji D. Barde Yogesh K. Gurav Sadhana S. Kode Akhilesh C. Mishra

Avian influenza (AI) H9N2 has been reported from poultry in India. A seroepidemiological study was undertaken among poultry workers to understand the prevalence of antibodies against AI H9N2 in Pune, Maharashtra, India. A total of 338 poultry workers were sampled. Serum samples were tested for presence of antibodies against AI H9N2 virus by hemagglutination inhibition (HI) and microneutralizati...

Journal: :Annals of clinical laboratory science 1971
E C Adams

The use of several methods to differentiate myoglobin from hemoglobin has been investigated. The immunochemical methods, particularly those of hemagglutination inhibition and radioimmunoassay, are the most useful. This report summarizes work in the Ames Research Laboratory over the past 17 years with the several methods.

2012
Andreas Mörner Andreas Bråve Anna-Maria Kling Sharon Kühlmann-Berenzon Katarina Krook Mona Hedenskog Irene Silhammar Margaretha Ljungman Åke Örtqvist Sören Andersson Maria Brytting Rigmor Thorstensson Annika Linde

The immunity to pandemic influenza A(H1N1)pdm09 in Sweden before and after the outbreaks in 2009 and 2010 was investigated in a seroepidemiological study. Serum samples were collected at four time points: during 2007 (n = 1968), in October 2009 (n = 2218), in May 2010 (n = 2638) and in May 2011 (n = 2513) and were tested for hemagglutination inhibition (HI) antibodies. In 2007, 4.9% of the popu...

2013
Manuel Saavedra‐Montañez Víctor Carrera‐Aguirre Héctor Castillo‐Juárez Francisco Rivera‐Benitez Karina Rosas‐Estrada Evelyn Pulido‐Camarillo Carmen Mercado‐García Rosalba Carreón‐Nápoles Mario Haro‐Tirado Dora P. Rosete Carlos Cabello María E. Manjarrez Iván Sánchez‐Betancourt Humberto Ramírez‐Mendoza

BACKGROUND In the present study, we analyzed the presence of antibodies to four different influenza viruses (pH1N1, hH1N1, swH1N1, and swH3N2) in the sera of 2094 backyard pigs from Mexico City. The sera were obtained between 2000 and 2009. OBJECTIVES The aim of this study was to perform a retrospective analysis of the 2000-2009 period to determine the seroprevalence of antibodies against pH1...

Journal: :Journal of clinical microbiology 1976
J B Campbell M Romach M L Ellins

We have shown that bacterial contamination of sera can have a marked influence on the results of the rubella hemagglutination-inhibition (HI) test. In addition to increasing the levels of nonspecific agglutinins, a number of common bacterial species tested had a significant effect on the HI titers. When sera free from rubella-specific antibodies were contaminated with Bacillus subtilis or Pseud...

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