What is it about?

Hospital-acquired infections (HAIs) are significant problems which need serious attention worldwide. HAIs refer to a group of infections a patient does not have before admission to the hospital. HAIs do not even exist in the latency period; they occur upon arrival at the hospital or within 48-72 hours after admission to the hospital. This study aimed to carry out a systematic review and a meta-analysis to analyze the prevalence of HAIs globally

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Why is it important?

The rate of universal HAIs was 0.14 per cent. The rate of HAIs is increasing by 0.06 per cent annually. The highest rate of HAIs was in the AFR, while the lowest prevalence was in AMR and WPR. Besides, AFR prevalence in central Africa is higher than in other parts of the world. Besides, E. coli infected patients more than other micro-organisms. Hospital wards, Transplants, and Neonatal wards and ICU had the highest rates. The prevalence of HAIs was higher in men than in women.


We identified several essential details about the rate of HAIs in various parts of the world. The HAIs rate and the most common micro-organism were different in various contexts. However, several essential gaps were also identified. The study findings can help managers and policymakers of the health sector identify the reason for HAIs and apply effective control programs to implement different plans to reduce the HAIs rate and the financial costs of such infections and save resources.

Ahmad Ghashghaee
University of Glasgow

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This page is a summary of: Global prevalence of nosocomial infection: A systematic review and meta-analysis, PLoS ONE, January 2023, PLOS,
DOI: 10.1371/journal.pone.0274248.
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