Murray Penner | WABE 90.1 FM

Murray Penner

Charles Sykes / AP Images for AIDS Healthcare Foundation

Undetectable equals untransmittable. It's a short phrase that HIV researchers and prevention experts believe represents one of the biggest steps we've ever seen toward eradicating HIV.

The scientific consensus behind “U=U” means people living with HIV who respond to antiretroviral medication and achieve an "undetectable" status do not sexually transmit the virus.*