Simpson said three to six months was all that was necessary for the virus to show up in tests. In Tasmania, men who had gay sex had to wait a year before giving blood, while in Britain they were banned forever, he said. Rainbow Wellington chairman Tony Simpson said that effectively banned all men in homosexual relationships and was discriminatory. The service now prohibits any man who has engaged in protected or unprotected anal or oral sex with another man over the past five years from giving blood.