The man had been handed a 150,000 kronor fine ($24,000) in addition to a year in prison. He appealed the ruling as he said he was being treated for the illness and none of the four women he had intercourse with became infected.
…Professor Jan Albert at the Karolinska University gave testimony and argued that the risk of infection was very small despite the man not using a condom.
The reason for the risk of infection being so small, argued the experts, was that the man was undergoing treatment for the illness and that it was going well.
There are plenty of cases of non-transmission from unmedicated people.
[Source: The Local]