Avian influenza, also known as human infection of avian influenza, is mainly caused by infection with the avian influenza virus, which belongs to the influenza A virus, and its main means of transmission are respiratory transmission, direct contact transmission, and so on. 1. Respiratory transmission: When normal people come into contact with air aerosols containing avian influenza, the virus can enter the body through the respiratory tract and infection may occur. 2. Direct contact transmission: Direct contact with feces of birds or objects contaminated by excreta may also lead to infection of avian influenza virus. In daily life, avoiding contact with poultry feces, good dietary hygiene and avoiding raw water can effectively prevent the virus infection. You should also seek medical attention as soon as possible if you experience any discomfort.