Study participants with detectable microneutralization assays titers against A/Equine/Mongolia/01/2008(H3N8) or A/Hong Kong/1073/1999(H9N2), with seroconversions.

<p>enroll = enrollment; 12 mo = 12 month annual follow-up; 24 mo = 24 month annual follow-up;</p><p> = 4-fold rise in titer between 2 timer periods;</p

Distribution of antibody titers against equine and avian influenza viruses among Mongolian participants, 2008–2011.

<p>0 mo = enrollment; 12 mo = 12 month annual follow-up; 24 mo = 24 month annual follow-up.</p

Viruses used in serological studies.

<p>Unless otherwise indicated, serologic study was performed using the microneutralization assay.</p><p>Virus studied with hemagglutination inhibition assay</p><p>Highly pathogen virus</p><p>Similar to 2009 pandemic H1N1 virus.</p><p>Virus of avian origin but cultured from a man.</p

Serological activity against swine and human influenza viruses by the hemagglutination inhibition assay, 2009–2011.

<p>Unadjusted odds ratio for agriculture workers against control enrollees with binary logistic regression.</p><p>*Covariate has some missing values.</p

Viruses used in serological studies.

<p>Unless otherwise indicated, serologic study was performed using the microneutralization assay.</p><p>*Virus studied with the hemagglutination inhibition assay.</p>†<p>Similar to 2009 pandemic H1N1 virus.</p><p>**Virus of avian origin but cultured from a man.</p

Study participants with ≥4-fold increases in microneutralization titers against avian influenza viruses at enrollment, 12-month and 24-month follow-up, and associated risk factors.

<p>H6N1 = A/Teal/Hong Kong/w312/97(H6N1); H9N2 = A/Hong Kong/1073/1999(H9N2).</p><p>H12N5 = A/Duck/Alberta/60/1976(H12N5).</p><p>*Lost to follow-up.</p>†<p>Respiratory illness (fever and cough or sore throat) in previous 12 months.</p

Results from bivariate analyses performed between each SIV by each human influenza virus studied.

<p>Results from bivariate analyses performed between each SIV by each human influenza virus studied.</p

Study participants with detectable microneutralization assays titers against avian influenza viruses at enrollment, 12- and 24-month follow-up, Kampong Cham Province, Cambodia, 2008–10.

<p>*Lost to follow-up.</p

Reported influenza-like illnesses with real-time RT-PCR results of respiratory swabs collected from study cohort members and their family contacts at time of illness; June 2008 - November 2010; Kampong Cham, Cambodia.

<p>Reported influenza-like illnesses with real-time RT-PCR results of respiratory swabs collected from study cohort members and their family contacts at time of illness; June 2008 - November 2010; Kampong Cham, Cambodia.</p

Number of study subjects with elevated microneutralization titers against low pathogenic avian influenza viruses, Kampong Cham Province, Cambodia, 2009–10.

<p>H4N6 = A/Migratory duck/Hong Kong/MPS180/2003(H4N6); H6N1 = A/Teal/Hong Kong/w312/97(H6N1); H9N2 = A/Hong Kong/1073/99(H9N2); H11N1 = A/Chicken/New Jersey/15906-9/1996(H11N1); H12N5 = A/Duck/Alberta/60/1976(H12N5).</p