While the number of vaccinated people who have been infected with COVID-19 has risen (due in large part to the greater number of those vaccinated), the vaccines are still proving to be effective against severe illness and being hospitalized or worse.

With researchers around the world studying both safety and effectiveness, the COVID vaccines are now among the most highly scrutinized vaccines in history. As of January 28, 2022, researchers from many of the US’ top medical institutions released one such study measuring the effectiveness of the vaccine and boosters. In that study, they reported the the Pfizer and Moderna vaccines with boosters are still highly effective in preventing COVID–associated emergency room visits and COVID–associated hospitalizations.

https://www.cdc.gov/mmwr/volumes/71/wr/mm7104e3.htm (CDC)
https://www.nejm.org/doi/full/10.1056/NEJMoa2117995 (New England Journal of Medicine)
https://www.cidrap.umn.edu/news-perspective/2022/01/studies-covid-vaccines-effective-limited-waning (Center for Infectious Disease Research and Policy)

Updated 02/02/2022