How common are breakthrough cases of COVID? A study in Washington state gathered data from over 4 million fully vaccinated people. The data showed a rate of about 1 in 5,000 experienced a breakthrough infection between January 17 and August 21, 2021.

Is a new COVID-19 surge expected?

Another surge of COVID-19 is likely to hit the United States this winter, according to experts at the Institute for Health Metrics and Evaluation of the University of Washington, which accurately forecasted the COVID-19 waves last winter and summer.

What are the odds of getting severe COVID-19 symptoms?

Most people will have mild symptoms and get better on their own. But about 1 in 6 will have severe problems, such as trouble breathing. The odds of more serious symptoms are higher if you're older or have another health condition like diabetes or heart disease.