Chinese health authorities have confirmed human cases of avian influenza A (H7N9) since September 2016. CDC advises people traveling to China to avoid contact with poultry (including poultry markets and farms), birds, and their droppings and to avoid eating undercooked poultry. Infected birds that appear healthy may still be able to transmit this virus to humans.

https://wwwnc.cdc.gov/travel/notices/watch/avian-flu-h7n9