Business colleagues greeting with elbow in office
Two business colleagues greeting with elbow in office. Business people bump elbows in office for greeting during covid-19 pandemic.

Medicine’s Jonathan Karn says that masks provide a safety net for both vaccinated and unvaccinated people

Media
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Face mask requirements aim to protect unvaccinated people

Agence France-Presse: Jonathan Karn, chair of the Department of Molecular Biology and Microbiology at the School of Medicine, said that masks also provide a safety net to protect both vaccinated and unvaccinated people from the risk of coronavirus variants, thought to be more contagious. “It’s like seatbelts, or wearing a helmet,” he said. “I’m fully vaccinated, but I’m perfectly happy to keep wearing a mask.”