#Undetectable – HIV-positive, not infectious
People with HIV who are in effective, long-term antiretroviral therapy are no longer infectious. The #undetectable campaign is designed to break down the stigma attached to being HIV-positive.
An HIV-positive person is no longer infectious if the viral load in the blood has remained undetectable for at least six months, HIV drugs are being taken as prescribed, and a doctor is checking blood values regularly.
In such cases, sex without a condom also counts as safer sex.
Further information from Dr.Gay under #undetectable and on aids.ch under #undetectable:HIV-positive and not infectious? and Therapy as protection.