s actually a good epidemiologic reason that one-time exposures are more risky at the early stage of an epidemic, i.e. the
time frame of Dallas
Buyers Club. When HIV is first introduced into a population (more properly, into a network of sex partners -- i.e. the partners of partners etc), several people may be infected at more or less the same time, so that a high proportion of infected persons caught it recently and have with high viral loads, i.e.