As many as 246 Michigan residents considered fully vaccinated against COVID-19 were later diagnosed with the virus, and three have died, state officials confirmed Monday.
The cases were reported between Jan. 1 and March 31, and the 246 had a positive test 14 or more days after the last dose in the vaccine series, said Lynn Sutfin, a spokeswoman for the Michigan Department of Health and Human Services, in an email.
“Some of these individuals may ultimately be excluded from this list due to continuing to test positive from a recent infection prior to being fully vaccinated,” she said.
“These cases are undergoing further review to determine if they meet other CDC criteria for determination of potential breakthrough, including the absence of a positive antigen or PCR test less than 45 days prior to the post-vaccination positive test. In general, these persons have been more likely to be asymptomatic or mildly symptomatic compared with vaccinated persons.”