- COVID-19 vaccination breakthrough infections in a real-world setting News-Medical.Net
- Maine COVID-19 experts: breakthrough cases correlated to how long ago someone got their vaccine, exp NEWS CENTER Maine
- DOH: COVID breakthrough cases represent only 2.5% of vaccinated population in Washington KXLY Spokane
- Wash. state reports 43 percent increase in breakthrough COVID-19 cases KOMO News
- Maine COVID-19 experts: 'Clear correlation' between breakthrough cases and no booster, expect 'fully vaccinated' definition to change NewsCenterMaine.com WCSH-WLBZ
- View Full coverage on Google News