:In the 1999 version of his OPV AIDS hypothesis, Edward Hooper proposed that early batches of the oral polio vaccine (OPV) grown in cultures of chimpanzee kidney cells, infected with a chimpanzee virus, were the original source of HIV-1 in Central Africa.
SLNS Samudura (P-621) (Samudura, in Sinhalese: Sea) is an Offshore Patrol Vessel (OPV) of the Sri Lanka Navy.