1. Suffering from certain diseases or carrying certain viruses, such as dysentery, typhoid fever, viral hepatitis A or E, active tuberculosis, purulent or exudative dermatosis, etc. These diseases may spread through food and pose a threat to food safety.
2. In the past two years, individuals may not have been properly treated or recovered according to the doctor's advice, which led to the deterioration of their health status, thus affecting the results of this year's health certificate examination.
Problems in food production, such as contaminated raw materials and irregular production technology, may lead to unqualified health certificate this year.
The specific reasons need to be analyzed according to this year's examination results and related medical records. It is recommended to consult a professional doctor or medical institution for more accurate diagnosis and treatment advice.