Is Covid-19 surging again? Our expert explains how to prepare
CNN
The much-awaited summer lull in coronavirus cases doesn't appear to be happening. CNN Medical Analyst Dr. Leana Wen offers her insights about what precautions to take as infections continue to increase in much of the United States.
An earlier rise in cases this year was driven by the BA.2 Omicron subvariant. Now, the US Centers for Disease Control and Prevention reports that two other subvariants, BA.4 and BA.5, constitute more than 70% of new infections in the country. These subvariants may partially escape the immunity produced by the vaccine and by prior infection, though vaccination still likely protects against severe illness.
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