Is it true that epidmilogical studies on HIV infection conducted in real life?

has proved that Having safe sex with an infected partner does not necessarily transmit the virus to the uninfected partner.2.Does having unsafe sex with an infected partner necessarily infect one with the viruseg the ex south african vice president-ZUMA'S ENCOUNTER WITH AN INFECTED WOMAN.What are the chances.Do we have factual cases.

Studies have shown that using condoms does reduce the risk of acquiring HIV. Condoms don't entirely eliminate the risk. Condoms can be defective-always make sure that the package is not worn, (from carrying in a wallet or pocket), there is an expiration date that should be checked as well-the material could break down if too old, the condom should be checked for very small holes and if ok on all counts-used properly with every sexual encounter.

Having unsafe sex with a HIV infected partner is very high risk. There's a theory that having sex with an infected partner who's viral low is very low may not be quite as risky but I wouldn't test that theory.

A small population of people who have taken this risk but not sero converted, have been observed, but again, I wouldn't take that risk, there's no way to measure it.

So, where you might find some case studies, it'll be unlikely that you find any solid proof in this very risky area.