There is also a clinical trial for patients who cannot take AZT.
He has been taking AZT, a drug that scientists are at last convinced works, although it is not a cure.
Those who had taken AZT before the study began were especially vulnerable to relapse.
He started taking AZT, but went off the drug after two months.
But the new study found that there was no evident benefit in taking AZT early.
Before entering the study, participants had taken AZT for an average of about two and a half years.
Johnson said none of the rumors were true, including the one that he is having side effects from taking AZT.
At birth, the baby takes AZT four times a day for six weeks.
Thousands of people took AZT in the hope that it would make them feel better and live longer.