No special shots or immunizations are required for visitors from the United States, though this can change. If you will be arriving from any other areas, it's best to ask your airline when you book your ticket. Generally, the only time you require anything is if you are coming from a sub-Saharan African country where you may have been exposed to yellow-fever. If this does not apply to you, you probably don't need anything. Still, it never hurts to check with your local doctor as these situations can change rapidly.
Once you are in Hong Kong, the water is safe to drink, but bottled water is available everywhere. If you need an ambulance for any reason, the toll-free emergency number is 999. (This number is good for the police and fire departments, as well - see below.)
Hong Kong (along with Singapore and the East Asian cities of Tokyo, Seoul, and Taipei) is one of the safest cities in the world, 24 hours a day. Your major concern would be the chance of the occasional pickpocket. Keep an extra eye on your purse/pockets when on trains or in crowds.
- Emergency Service (Police, Ambulance, Fire): 999
- General Police Enquiries: 2527 7177
- Department of Health: 2961 8989
- Hong Kong Tourism Board Visitor Hotline: 2508 1234
- Weather Information: 187 8066
- Overseas IDD and Cardphone Enquiries: 10013
- Consumer Council: 2929 2222
- Hong Kong International Airport : 2181 0000
- Directory Enquiries : 1081