Breakthrough cases are when vaccinated people test positive for the virus.READ MORE: New York Preparing For Potential Staffing Disruptions As Vaccine Deadline Approaches For Health Care Workers
At least 8,700 vaccinated New Yorkers contracted COVID as of April 1. That’s out of nearly 11 million people who are fully vaccinated.READ MORE: 'I'm Going To Risk It:' CBS2 Finds Many Subway Riders Still Not Wearing Masks As MTA Starts Issuing Fines
In New Jersey, there were about 3,700 breakthrough cases by June 28. That’s among 4.4 million vaccinated people.MORE NEWS: FDA Approves Pfizer COVID-19 Booster Shot, But Confusion Still Reigns Over Who Can Get It And When
In Connecticut, 854 vaccinated people tested positive for COVID as of July 16. That’s out of more than 2 million vaccinated people.