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Krumholz said he and some fellow researchers wanted to learn how quickly COVID-19 first spread in the general community, not only cramped settings like prisons or nursing homes, where the rate of infection was magnified.
“We were a little bit in the dark as to exactly how many people in the state have totally been infected,” explained Krumholz.
That led to a study that excluded those facilities.  Researchers asked roughly 1,000 Connecticut residents to take blood tests so they could see if they had COVID-fighting antibodies, a sure sign they had it either with or without symptoms.
“People came in they gave blood we looked in their blood and we said ‘…is there any, are there any telltale signs that they ve actually been infected?’ and that s how we came up with the with the estimates of how far had the virus spread in the state by June,” Krumholz said. ....

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