The Delta 32 genetic mutation prevents HIV; it's been found in the DNA of those who didn't get this Medieval scourge
[DOC] [TLE] Full text of "Possible Suppressed Cure For HIV And A. I. D. S." [PAR] "The way we tied events togedier is tiiis: A person gets infected with HIV, and at 
first ... For years scientists, Berger among them, had been trying to uncover its 
identity.