Print In 2016, when Mariah Wilberg started working as a communications specialist at the Minnesota Department of Health, she was determined to incorporate the concept of Undetectable = Untransmittable (U=U) into the state health agency’s messaging. “I embarked on a process of figuring out where we were heading in regard to U=U and whether people were receptive to us officially endorsing the campaign and starting to do public education,” says Wilberg, an advocate living with HIV.