Risk Perceptions for Avian Influenza Virus Infection among Poultry Workers, China
Figure. . Avian influenza A (H9N2) virus microneutralization titers of workers with occupational exposure to poultry, Beijing, China, 2009–2010. A total of 305 serum specimens were tested by microneutralization assay, serum samples were considered positive with titers >80, and titers <10 were not included in this figure. Geometric mean titers and 95% CIs of subtype H9N2 microneutralization titers in various groups are indicated by long and short horizontal lines.