Researchers at the University of Toronto have found that Omicron variants of the COVID-19-causing virus can be hindered in their ability to infect people by mutations in the spike protein that prevent the virus from binding to and entering cells.
Genetic variant identified may help explain asymptomatic covid - The Washington Post
Information for Persons Who Are Immunocompromised Regarding Prevention and Treatment of SARS-CoV-2 Infection in the Context of Currently Circulating Omicron Sublineages — United States, January 2023
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