Any thoughts on immunizations for cruises. Public Health Service recommends Hepatitis A, Tetanus, Typhoid, Yellow Fever and Malaria Tablets for the Belize, Costa Rica and Panama cruise. Granted, we are traveling by ship but tours do go incountry and many offer water activities and trips on rivers and in forests. My doctors office recommends Hepatitis A, Tetanus and Malaria Tablets. Any thoughts? Should cruise lines include this information for certain ports of call?