As of July 12, the CDC reported 5,492 breakthrough COVID cases resulting in hospitalization or death. Meanwhile, states continue to report more breakthrough cases, and the New York Yankees cancel series opener after fully vaccinated players test positive.
A breakthrough case refers to anyone who is diagnosed with COVID after being fully vaccinated. A person is considered fully vaccinated two weeks after receiving the second dose of either the Pfizer or Moderna COVID vaccine, or two weeks after receiving the single-dose Johnson & Johnson (J&J) vaccine.
In May, the CDC revised its system for reporting breakthrough cases, stating it would count only those cases that result in hospitalization or death. Previously, the agency had included in its breakthrough count anyone who tested positive for COVID.
Some states follow the new CDC guidance for counting breakthrough cases. Other states continue to report, at the state level, all cases where an individual tests positive, but may choose to report only hospitalizations and deaths to the CDC.
Illinois, Massachusetts update breakthrough case numbers
According to data updated July 14 by the Illinois Department of Public Health (IDPH), 151 people in Illinois have died from COVID or COVID-related complications after being fully vaccinated. At least 563 fully vaccinated people were hospitalized, IDPH said.
Illinois follows CDC guidance, reporting only on breakthrough infections among those who have been hospitalized or died. The state does not publicize the number of residents who tested positive after being fully vaccinated but did not die or require hospitalization in order to “help maximize the quality of the data collected on cases of greatest clinical and public health importance,” IDPH’s website states.