Avoiding COVID infection--new study supports vacinations, masks and ventilation

Summer Covid Surge 2023: How to Lower Your Risk A new study of prison populations shows vaccination can ward off infection — up to a point. Masks and ventilation could make the difference. Lisa Jarvis Bloomberg

A new study is offering data to back one of the core assumptions about the spread of Covid: The intensity of exposure to the virus matters, and vaccines and prior infections can only help so much — but they do indeed help.

The research, led by scientists at the Yale School of Public Health and published in Nature Communications, also reinforces the common-sense notion that masks and air filtration can augment the protection provided by a vaccine and lower the risk of getting the virus. Anyone watching Covid cases bubble back up in their community should take that to heart: Infections aren’t unavoidable.

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