Originally Posted by JohnBurke

Yellow Fever is the only required shot. Its unavailable, as the facility that manufactured the vaccine has been unavailable since early last year. A French substitute is in use.

Some countries placed a 10 year limit on the shot; by international agreement, all nations are to recognize a lifetime value for the shot.

You're best off getting immunized for other pathogens. Numerous outbreaks occur around the world, and if you're flying in Africa, regular multiple outbreaks of cholera and other diseases are common.

All the standard vaccinations should be current, including your tetanus shot.

Can you get sick when getting shots? Yes. I have. You should still get them.