Thanks Daffodil.
It's a massive parallel to the ME situation right now, isn't it.
Some researchers are saying that anti-retrovirals might be helpful for ME patients because of their immune-modulating effects, rather than their anti-viral action.
Specifically, some researchers are saying that the anti-retrovirals dampen the immune system, and that ME patients have an over-active immune system. This ties in with the article saying that AZT lowers levels of interferon alpha, "a protein involved in fighting infection".