When receiving the nine-valent vaccine, it is generally not recommended to eat spicy and stimulating foods, nor seafood and thick, greasy foods. Before and after the vaccination, it is recommended not to drink strong tea or alcohol, and to avoid vaccination in case of cold or fever. Through the vaccination of the nine-valent vaccine, antibodies against the HPV virus can be produced. As long as a person’s immunity is normal, immune cells, mainly B lymphocytes, are able to produce antibodies against the virus. During the vaccination period, do not be alarmed if an allergic reaction or acute fever occurs, as the symptoms will usually resolve on their own within 1-2 days. If fever or rash does occur, just pay attention to a light diet.