Charlie Sheen, 51, revealed his HIV diagnosis publicly last November

He began a clinical trial into a virus-suppressing injection called PRO-140 early this year

This week he got the news that his virus is completely suppressed - something people normally require daily doses of antiretroviral therapy drugs to achieve

Today he joins public health leaders declaring their support for advances in medical research and to de-stigmatize living with HIV 

Surveys show many are still unaware that the virus can be suppressed to such a level that risk of transmission is negligible