About 77 million people in the U.S. are fully vaccinated against coronavirus, according to a CNN analysis of CDC data. The CDC’s reports on breakthrough cases will lag day-to-day reports of vaccines given, so many, if not most, of those breakthrough cases will have happened weeks ago. Some became seriously ill and 74 people died, the CDC said. It said 396 (7%) of those who got infected after they were vaccinated required hospitalization.

‘Vaccine breakthrough infections were reported among all people of all ages eligible for vaccination. However, a little over 40% of the infections were in people 60 or more years of age,’ the CDC said.

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