Considering that its not legal to enter Cuba in the first place...and it's only accessible by boat...vaccinations aren't a necessity. Actually, you should get your shots there; they have universal health care. It is not illegal to enter Cuba, it is illegal to travel directly from the US to Cuba. Cuba has airports, 165 of them, it is not only accessible by boat, they even have their own airline, Cubana. Vaccinations are necessary no matter what country you travel to. They might have universal health care but that does not mean you will be able to use it. So, if you are planning on visiting Cuba take care of all your vaccinations and have a plan for your medical needs.
hepatitis a&b will be very important
No
no you need a passport
Americans certainly can enter into Cuba. There is no law stating that Americans could not enter into Cuba's small territory.
Yes. British nationals do need a visa to go to Cuba. Contact the nearest Cuban embassy for visa processing.
Typically, horses entering contests need to be up-to-date on core vaccinations like rabies, tetanus, and possibly equine influenza and rhinopneumonitis. Some competitions may also require additional vaccinations, such as strangles or West Nile virus, so it's important to check the specific requirements of the contest you plan to enter.
Unless it's a very special chicken they don't need vaccinations.
No.
Yes. However, there are no direct flights from the US into Cuba; you would need to enter Mexico first. As an European citizen, you don't need anything besides your passport to enter Mexico.
Yes you do need vaccinations for Singapore and Hong Kong because you can get a vary harmful disses
No, you don't need vaccinations when visiting Cape Town.
No. Rats do not get inoculations.