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1 in 5 COVID-19 infections in LA in June were in fully vaccinated people, but most had mild or no symptoms, officials say

A health worker in blue protective gear and gloves injects a vaccine in a woman's arm.
  • One in five people who tested positive for COVID-19 in LA County in June were fully vaccinated, officials said.

  • Vaccinated people who caught the virus mostly had mild symptoms or none at all, officials said.

  • The county recorded 2,767 new cases on Thursday, up by 80% in a week, mostly caused by Delta.

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One in five people who caught COVID-19 in Los Angeles County in June were fully vaccinated, county health officials said on Thursday.

Most of these fully vaccinated people developed mild symptoms or none at all, the officials said.

They said the fast-spreading Delta variant was causing the majority of infections in the county, the most populous in the US.

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The Los Angeles County Department of Public Health said in a press release that "in June, fully vaccinated people represented 20% of all cases diagnosed among L.A. County residents, while unvaccinated and partially vaccinated people accounted for 80% of cases."

The number of infections in fully vaccinated people reported in the week to Thursday was up by 58% from the previous week - but the numbers of fully vaccinated people requiring hospital treatment for COVID-19 and deaths among fully vaccinated people increased by only small fractions of a percentage, the officials said.

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Dr. Barbara Ferrer, the department's director, told the Los Angeles Times that if you get COVID-19 after vaccination, "your chances of both ending up in the hospital, ending up in an ICU, ending up intubated are much less than the chances of that happening if you're somebody who is unvaccinated."