If HIV transmission probability is 0.07% per act male to female, 0.04% female to male.
Why is it so prevalent is South Africa with 13% of population infected?
so that is 7 or 4 cases per 10 000 sexual acts, majority of population should be heterosexual
That is if you have sex everyday for 27 years ( 10000/365 =27), you have 7 confirmed chances of getting HIV
So why is it so prevalent? Doesn't make sense.
Are we undercounting the transmission risk?
Thanks in advance