If you go to Africa, be sure to go to your nearest travel medicine clinic.
We found that, in addition to yellow fever innoculations and antimalarials
(Larium), we were advised to have many other innoculations---I remember
six one evening at the clinic. You must start well ahead of time, since
some innoculations require a series of shots and need three months or
so to be effective. The average family doctor or internist does not know
the up-to-date info. for each country nor do they often have many of the
medications; my internist sent us to the travel clinic and they were superb!
None of the seven of us who went had any adverse reactions to any of the
medications/shots. U.S. health insurance does not cover these (at least
our BC/BS didn't) so they are costly but well worth it! Pat