Avian Influenza A (H5N1) Virus Antibodies in Poultry Cullers, South Korea, 2003–2004

Abstract

Transmission of influenza (H5N1) virus from birds to humans is a serious public health threat. In South Korea, serologic investigation among 2,512 poultry workers exposed during December 2003–March 2004 to poultry with confirmed or suspected influenza (H5N1) virus infection found antibodies in 9. Frequency of bird-to-human transmission was low.

Seroevidence for a High Prevalence of Subclinical Infection With Avian Influenza A(H5N1) Virus Among Workers in a Live-Poultry Market in Indonesia

“…It has been reported elsewhere that the seroprevalence of antibodies against avian influenza A(H5N1) virus among poultry workers was 0%–10% by microneutralization assays [15–24]. Results of this study show that sera collected from 84% of 101 workers in 2014 at a live-poultry market in East Java tested positive against Av154(H5N1 Eur) virus by the HI assay.…”

Assessment of Serosurveys for H5N1

“…The remaining 3 Hong Kong studies did use WHO criteria and reported seropositivity rates of 3%-10%. Another of the 7 studies was conducted in South Korea following the poultry outbreak there in 2003-2004 and used WHO criteria [20]. This study reported 0.4% seropositivity among poultry cullers.…”

Serosurveillance of avian influenza A/H5N6 virus infection in poultry farmers, Gyeonggi Province, Republic of Korea, 2016–2017

“…In addition, a previous seroepidemiological study in Hong Kong that examined influenza virus (HPAI A/H5N1) transmission among poultry farmers showed that 10% of 1525 poultry farmers had antibody titers against influenza (H5N1) of >1:80 (Bridges et al, 2002). Conversely, other serosurveys in Korea and Nigeria reported no poultry farmer infection with the HPAI A/H5N1 virus from infected poultry (Kwon et al, 2012;Ortiz et al, 2007).…”