The latest strain was evidently transmitted among people who have never been exposed to AZT, suggesting that drug resistance is spreading rapidly within HIV-positive people who may not even know they are infected It seems to me more likely that this is a strain initially and in part currently spread by infected people who are being treated, so that the strain in their bodies has evolved resistance. There have been numerous articles here posted about homosexuals, including ones who know they are infected, not bothering with "safe" sex any more, whether because of fatalism or confidence in the drugs.
Mrs VS
It would seem that that is the most likely case. Many lay readers do not understand just how smart and adaptive this killer is. African monkeys - Africans - Cubans Fighting in Angola - Haitians - American Homesexuals - Bisexuals - IV drug Users - Heterosexuals........