Legal basis: Article 25 of People's Republic of China (PRC) Food Hygiene Law (for Trial Implementation) requires food producers and operators to conduct health examination every year; New and temporary food production and operation personnel must have a health examination and obtain a health certificate before they can take part in the work. Anyone who suffers from dysentery, typhoid fever, viral hepatitis and other digestive tract infectious diseases (including pathogen carriers), active tuberculosis, suppurative or exudative skin diseases and other diseases that hinder food hygiene shall not take part in direct contact with imported food.