22 May 2017 - A man has tested positive to HIV at a Melbourne clinic while participating in a trial of PrEP, an antiretroviral drug credited with preventing the spread of the disease.
This has sparked fears in the gay community about possible resistance to the medication - particularly after rumours about the strain circulated on social media over the weekend.
However, it is not yet known whether the man has contracted a drug-resistant strain, or if something else is to blame.