Which vaccinations make sense for a trip to China depends mainly on which region you're visiting. Climate zone and level of urban development both play a big role — a pure city trip to a metropolis like Beijing or Shanghai carries a relatively low risk of picking up a serious infectious disease.
If you're traveling south, where the climate is subtropical, a malaria vaccination may be worth considering — though it's worth checking beforehand whether malaria cases have actually been reported in the specific region you're visiting.
Avian influenza (H5N1) is no longer considered an acute threat in China, so eating poultry products is generally safe.
Make sure your routine vaccinations are up to date before you travel. Many family doctors aren't always sure which vaccinations are currently recommended for a particular destination — your health insurer or a travel-medicine clinic can advise you.
Government travel-health websites and dedicated travel medicine clinics are good sources of up-to-date vaccination advice for China.
