There seems to be a gross misunderstanding about Annie Lennox's HIV status.

No, Annie Lennox is not HIV positive. Rather, she has been a campaigner for those who are.

This seems to have got rather garbled as the news has passed around the information superhighway. To campaign on behalf of those who are HIV positive, as Annie Lennox has, is not the same thing as being HIV positive oneself, as Annie Lennox is not.