15 states are keeping COVID breakthrough cases under wraps

State health departments across the country are taking various approaches to how they keep records on COVID-19 breakthrough cases, with 15 states deciding not to publish any data on the extremely rare incidents.

An analysis by The Hill found that 35 states have disclosed some data on fully vaccinated people who later contracted COVID-19. The information ranged from a one-time percentage of residents who experienced a breakthrough infection to weekly detailed overviews broken down by demographics like age, sex and race.