Ensure that you are up-to-date on all routine vaccinations. This is a recommendation from the Centers for Disease Control and Prevention (CDC) These vaccines include such shots as polio, diphtheria, tetanus, and even chicken pox. The shots are normally given during childhood, but sometimes boosters are needed. When traveling overseas, these illnesses are sometimes more prevalent, so getting them before you leave can prevent unnecessary sickness during your vacation. Tetanus is one of the most important if planning to do activities that might cause injury, such as skiing in northern China or surfing in the south.
Hepatitis A and B
Hepatitis A shots are needed even if staying in the more populated cities, such as Shanghai. It can be spread even in clean areas, and is usually passed through food and water. Hepatitis B should be received if you are planning be around any sports or activities that might cause injury with the result of bleeding. Hepatitis B can be spread through the mingling of blood or bodily fluids.
If traveling to the eastern part of Asia, especially smaller towns, the CDC advises that you receive a typhoid shot. This disease is passed through food and water, and is more prevalent in smaller less sanitary villages.
You should get a rabies vaccination if you are planning to be outdoors for long periods of time where you will be exposed to wild animals or strays. China has an issue with stray dogs, so even if you are not in the middle of nowhere hiking or skiing down a mountain, you should be careful about making contact with animals.
Screenings for certain flu strains are sometimes done to visitors from other countries where there might be an outbreak. Anyone can be pulled out of line for a test, so if you are showing flu like symptoms be prepared for this fact. If they find that you do have the flu, they will more than likely send you straight back home.