January 12, 2018
The levels of avian influenza viruses (AIVs) in poultry in Cambodian live-bird markets (LBMs) are rising. According to the latest findings from researchers from Australia and Cambodia who have been monitoring the viruses in two of the country’s markets since 2011, earlier surveillance studies from Cambodia suggested the country has some of the world’s highest AIV detection rates in poultry. The researchers found year-round high cocirculation of H5, H7, and H9 viruses. They found influenza A viruses in 51.3% of ducks and 39.6% of chickens, and 93% of carcass wash water samples, along with coinfections—mainly involving H5 and H9 viruses—in 0.8% of ducks and 4.5% of chickens. The level of coinfections is a concern, due to the risk of reassortment that could produce novel avian flu viruses that might have pandemic potential.