In order to recognize the infection status of type A avian influenza virus in Anhui province,a cross-sectional study was carried out from April to May,2018. A total of 173 diff erent types of poultry flocks were randomly selected from the 7 cities located in the north,middle and south part of Anhui. Then,35 throat/cloacal and environmental swab samples were collected and the nucleic acids of type A,H5 and H7 subtype AIV were detected by the real-time RTPCR method. Results showed that,among the flocks random...