A new study in BMC Infectious Diseases assessed the direct impact of COVID-19 vaccination in Chile on the number of COVID-19 related cases, hospital admissions, intensive care unit (ICU) admissions and deaths averted during the first year and a half of the vaccination campaign from December 2020 to July 2022.
Using data on weekly event counts categorized by vaccination state and age, integrated with census and vaccination coverage information, researchers estimated that the vaccination campaign directly prevented over one million cases, 268,784 hospitalizations, 85,830 ICU admissions and 75,968 deaths related to COVID-19 among individuals aged 16 years and older. This corresponds to a reduction of 26% of cases, 66% of hospital admissions, 70% of ICU admissions and 67% of deaths compared to a scenario without vaccination.
This study highlights the role of Chile’s vaccination campaign in reducing COVID-19 disease burden, with the most substantial reductions observed in severe outcomes.
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