I've been eating local raw oysters from Panama City, FL. and the excellent Apalachicola oysters and have never had a problem.
LSU, a few years ago, released some research that indicated either the vinegar or the hot pepper juice commonly found in the red sauce that is usually put on raw oysters, kills just about all the microbes.
Just use the sauce and there should be no problems if you are otherwise healthy. Also, make sure either you opened them yourself or you were able to be sure someone else is opening them just before you eat them. The oyster is, essentially, still alive when you eat it....you don't want to ever eat a dead one raw....unless it died on your plate minutes before eating.
Good tips. The NVA tried to kill me - they failed. The Serbs tried to kill me - they failed. I'm willing to give the oysters a fair chance
GAK.