Study finds 12% of Orange County residents had coronavirus by summer

“What was most surprising among the researchers was how high the seroprevalence of COVID was,” said Tim Bruckner, a study principal and associate professor of public health at UC Irvine. “We had a suspicion there would be more cases if we looked in the overall community rather than just at those asking for testing, but we didn’t understand how widespread it was already. … We are nowhere near herd immunity,” Bruckner said. “The argument that we’re very close and will turn the corner soon isn’t borne out by the data.”