Breakthrough COVID-19 Cases Very Rare But Seem to Stem From Unvaccinated People

Vaccinated people can still get sick with COVID-19 in breakthrough cases, but 99.5% of coronavirus deaths in the U.S. consist of the unvaccinated, according to federal health officials. A Sacramento woman who caught the novel coronavirus is one example of a breakthrough case of COVID-19 where an individual got sick, despite being fully vaccinated. Erica Castillo was stricken with a severe case of coronavirus, and she knows where she got it from: a bar she was at on the Fourth of July.