It means that when a person living with HIV is on regular treatment that lowers the amount of virus in their body to undetectable levels, there is zero risk of passing on HIV to their partners. The low level of virus is described as an undetectable viral load.

Can HIV be transmitted while on medication?

People living with HIV who take HIV medication daily as prescribed and get and keep an undetectable viral load have effectively no risk of sexually transmitting HIV to their HIV-negative partners.

How can I protect my partner from getting HIV?

Preventing Getting HIVChoose less risky sexual behaviors. Use condoms. Talk to your doctor about PrEP. Take PEP within 72 hours after a possible HIV exposure. Encourage your HIV-positive partner to get and stay on HIV treatment. Get tested and treated for other STDs and encourage your partners to do the same.More items •9 Apr 2021