Breakthrough cases
Healthcare worker describes contracting breakthrough COVID-19 infection after vaccination
WGN
Of the more than 98 million people fully vaccinated in the US, a tiny portion are developing rare COVID-19 breakthrough cases.
Breakthrough cases
Of the more than 98 million people fully vaccinated in the US, a tiny portion are developing rare COVID-19 breakthrough cases.
Colorado health officials say they studied what they call breakthrough cases who are Coloradans who got the coronavirus after..