Mpox outbreak in advanced HIV cases | Global case series reveals higher mortality and clinical complications

Summary: This article discusses a case series investigating monkeypox (mpox) in people with HIV and low CD4 cell counts. The mpox outbreak in 2022 has affected a significant percentage of people living with HIV, and data suggest worse clinical outcomes and higher mortality in those with more advanced HIV. The case series includes data from 382 confirmed mpox cases in people living with HIV from 19 countries. The individuals included were predominantly cisgender men, with a median age of 35. Most individuals were adherent to antiretroviral therapy, and the median CD4 count was 211 cells per mm3. Severe complications were more common in those with lower CD4 cell counts, including necrotizing skin lesions, lung involvement, secondary infections, and sepsis. Approximately 28% of individuals were hospitalized, and 25% of those hospitalized died. All deaths occurred in people with CD4 counts of less than 200 cells per mm3. The study reinforces the importance of HIV and CD4 testing in mpox cases, prioritization of preventive mpox vaccination in people with HIV and a CD4 cell count of less than 200 cells per mm3, and the use of potential mpox antivirals where available. The authors suggest that a severe, disseminated, and necrotizing form of mpox should be considered an AIDS-defining condition in CDC and WHO HIV disease classifications. Clinicians should also be aware that starting antiretroviral therapy in people with advanced HIV and mpox could contribute to deterioration and possible death, possibly as part of an immune reconstitution syndrome.

Article: Mpox in people with advanced HIV infection: a global case series – The Lancet (free registration required)

News Release: Clinicians identify severe form of mpox with high mortality in people with advanced HIV – Queen Mary University of London

Commentaries:

Expert comment – Severe form of mpox identified in people with advanced HIV – London School of Hygiene & Tropical Medicine

Mpox: Clinicians identify severe form with high mortality in advanced HIV patients – The BMJ

Commentary from the author on Twitter (thread – click for more)

? ? Our global case series on MPOX in people with advanced HIV infection is at #CROI2023 and in @TheLancet today: 382 cases of human MPOX infection in PLWH with CD4 counts <350 cells/mm3 in 19 countries
**We found MPOX is an opportunistic pathogen** /1https://t.co/WodDN4Ujoj pic.twitter.com/IlK7viABmy

— Chloe Orkin (@profchloeorkin) February 21, 2023