Risk of COVID-19 hospitalisation by HIV-status and SARS-CoV-2 vaccination status during pre- and post-Omicron era in a national register-based cohort study in Sweden.

BACKGROUND

Data on the outcomes of COVID-19 in people living with HIV (PLHIV), specifically in relation to vaccination status, are lacking during the Omicron era.

METHODS

This nationwide registry-based study included all resident in Sweden ≥18 years with a positive SARS-CoV-2 PCR test during January 2021-February 2023. We estimated adjusted odds ratios (adjOR) for COVID-19 hospitalisation and severe COVID-19 (ICU admission and 90-day mortality), categorised by SARS-CoV-2 vaccination status (0-1, 2, and ≥3 doses), and HIV-status. Analyses were then categorised by time periods of pre-Omicron, Omicron during public testing, and Omicron after public testing.

RESULTS

1348 PLHIV and 1 669 389 people without HIV (PWoH) were included. PLHIV were older, more migrant (65

CONCLUSIONS

This nationwide study, including mostly well-treated PLHIV, highlights the importance of vaccination with booster dose/s for effective protection against severe COVID-19 in PLHIV.KEY POINTPeople living with HIV compared to people without HIV did not have higher odds of COVID-19 hospitalisation irrespective of SARS-CoV-2 vaccination status (0-1 dose, 2 doses, ≥3 doses) when adjusting for known risk factors including comorbidities and socioeconomic status.