Calif. man tests positive for COVID-19 weeks after receiving 2nd vaccine dose – Hawaii News Now

“We’re going to truly understand the effectiveness and how long these vaccines are effective, No. 1,” del Junco said. “No. 2, as soon as we started the vaccination program is when we started hearing about these mutant strains. We’ve got three aggressive mutant strains now that people keep talking about, and that’s been long after we started this vaccination process.”

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