NEW YORK -- As Americans brace for the possibility of another difficult winter ahead in the nation's fight against coronavirus, there is a renewed sense of urgency to get as many people inoculated and ...

LAS VEGAS, NEVADA -- A California couple says they were fully vaccinated, but still contracted COVID-19 while on vacation as experts say breakthrough cases are possible, especially with the delta ...

MARIN COUNTY, Calif. -- As the Delta variant spreads, we are learning more about breakthrough COVID-19 cases. Numbers from California's state health department help put into perspective what the ...

With the more contagious delta variant strain of COVID-19 spreading throughout the country, hospitalizations and deaths from the virus are on the rise. According to the Centers for Disease Control and ...

The true prevalence of breakthrough COVID-19 cases is difficult to track due to a lack of comprehensive testing and surveillance, but a new analysis from The Wall Street Journal suggests infections ...

More than 99.99% of people fully vaccinated against Covid-19 have not had a breakthrough case resulting in hospitalization or death, according to the latest data from the US Centers for Disease ...

This story first appeared at ProPublica. ProPublica is a Pulitzer Prize-winning investigative newsroom. Sign up for The Big Story newsletter to receive stories like this one in your inbox. Meggan ...

Across the country, as more breakthrough COVID-19 cases are reported, some people still not vaccinated have raised questions about getting the shot. But doctors said that, yes, getting vaccinated ...