Abstract
We report the use of environmental samples to assess avian influenza virus activity in chickens at live poultry markets in China. Results of environmental and chicken samples correlate moderately well. However, collection of multiple environmental samples from holding, processing, and selling areas is recommended to detect viruses expected to have low prevalence.
Highlights
We report the use of environmental samples to assess avian influenza virus activity in chickens at live poultry markets in China
We collected environmental samples from 3 key activity areas: poultry holding zones, slaughtering zones, and selling zones near the selected chickens whenever possible [5,6,7,8,9]. (Stalls sampled at the wholesale Live poultry markets (LPMs) [wLPM] have only poultry holding zones.) We sampled air using BC-251 cyclone-based NIOSH bioaerosol samplers that fractionate airborne particles into >4 μm, 1–4 μm, and
We examined the use of environmental samples to assess avian influenza virus (AIV) activity in poultry (Table 1)
Summary
The probabilities of accurately detecting the presence or absence of H5, H7, and H9 subtypes in poultry from environmental samples were comparable for the wLPM (68.8%–93.8%) and the rLPM (59.4%–100%) (Table 1). This finding suggests that environmental samples provided a useful indication of AIV activity in chickens at LPMs. for H5 and H7 viruses at the wLPM, in only 1 month did all environment samples test positive when bird samples were positive, demonstrating the need to take a wide range of environment samples.
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