The Zhengzhou Animal and Plant Quarantine Center in Henan Province is conducting a winter risk assessment and monitoring for highly pathogenic avian influenza. The focus is on key areas such as the Yellow River Wetlands, urban parks, and farmers' markets. The center has collected 157 samples for testing and is educating the public on the prevention and control of zoonotic diseases like avian influenza. The results of the testing will be used for the city's major animal epidemic early warning system.