The Pennsylvania Department of Health's report on COVID-19 post-vaccination cases, commonly known as "breakthrough cases," shows the overwhelming majority of cases, hospitalizations and deaths in the state are among the unvaccinated. "With nearly seven million Pennsylvanians fully vaccinated, the data makes it clear: the vaccines are safe and effective at preventing severe illness from COVID-19," Acting Secretary of Health Alison Beam said during a news conference at Penn Medicine Lancaster General Hospital's Suburban Pavilion.