Six of those are confirmed to be infected with the omicron variant. They are the only known omicron cases in the East Bay.
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Those eleven Kaiser workers are all vaccinated and have had booster shots, Kaiser says.
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Patients and coworkers who were in contact with them have been identified and so far, all have tested negative for coronavirus.
These 11 Kaiser workers are part of a cluster of 12 cases, stemming from a wedding in Wisconsin that took place over Thanksgiving weekend.
Sequencing on the other samples hasn't been completed yet.
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