We evaluated the seroprevalence of influenza A(H1N1) 2009 virus on a large public University ... the virus using a ≥ 1:40 dilution cut-off by hemagglutination inhibition assay.

In the hemagglutination-inhibition test ... and convalescent-phase serums from patients infected with influenza and hemadsorption virus respectively. Thus, persons from whom Type 1 or Type ...

Immunological assays such as hemagglutination inhibition and ... strategy during the early stages of an AIV [avian influenza virus] pandemic will likely involve immunization first with seasonal ...

Immune responses are measured by hemagglutination inhibition (HAI), virus microneutralization ... through multiple COVID-19 and seasonal influenza vaccine trials, which included more than 20,000 ...