U=U: ASHM guidance for healthcare professionals


First Published:
July 2018
Last Updated:
October 2020
Resource Type:
Educational Resource


2024 Update

This resource is currently being updated to reflect the advice outlined in the July 2023 WHO policy brief, The role of HIV viral suppression in improving individual health and reducing transmission. The brief advocates for the adoption of a three-tiered measure of viral load: unsuppressed (>1000 copies/mL), suppressed (detected but ≤1000 copies/mL) and undetectable (viral load not detected by test used). For more information about the WHO brief, visit: https://www.who.int/publications/i/item/9789240055179

‘Undetectable equals untransmissible’, or U=U, refers to the fact that people who take antiretroviral therapy for HIV daily as prescribed, and who achieve and maintain an undetectable viral load, cannot sexually transmit the virus to an HIV-negative partner.

U=U: ASHM guidance for healthcare professionals draws on the latest evidence to inform healthcare providers about U=U and provides recommendations for speaking about U=U to all patients, including those newly diagnosed with HIV.

Undetectable Roadmap Poster

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