In 2022, WHO published the Consolidated guidelines on HIV, viral hepatitis and STI prevention, diagnosis, treatment and care for key populations. These guidelines outline a public health response to HIV, viral hepatitis and sexually transmitted infections (STIs) for 5 key populations (men who have sex with men, sex workers, people in prisons and other closed settings, people who inject drugs and trans and gender diverse people). In this policy brief, we give an update on those parts of the guidelines which are relevant for people who inject drugs.