U=U 概念,係講緊透過性行為HIV陽性一方,不能夠將病毒傳染畀對方
People cannot pass HIV through sex when they have undetectable levels of HIV. This prevention method is estimated to be 100% effective as long as the person living with HIV takes their medication as prescribed and gets and stays undetectable. This concept known as Undetectable = Untransmittable (U=U).
https://www.health.state.mn.us/diseases/hiv/prevention/uu/index.html