PITTSBURGH — We took a closer look at the data, and we are seeing a trend of increasing breakthrough cases among vaccinated people.
In Allegheny County, for October and November, breakthrough cases made up about 38-percent of all COVID cases. We learned that was 15-percent more than the previous month, September, which had about 23-percent breakthrough cases.
So, why so many now? Should we be alarmed by the increase?
We asked University of Pittsburgh infectious disease expert Dr. Lee Harrison.
“No, it’s not alarming at all. Actually, the vaccines are working really, really well. They work best against severe infection. So really, really good at keeping you out of the hospital and from dying, but less effective in terms of mild disease,” Dr. Harrison said.
Breakthrough Hospitalizations & Deaths
While Dr. Harrison says vaccines are still highly effective against severe illness for most people, we do see some hospitalizations and deaths among break-through cases.
We requested recent numbers from the Pennsylvania Department of Health, which hadn’t been published yet.
We learned, for September and October, about 25-percent of hospitalizations statewide were breakthrough cases; and for August, the most recent month available, 25-percent of COVID deaths in Pennsylvania were breakthrough cases.
Dr. Harrison says those deaths are primarily among people who have serious underlying conditions.
“There are some deaths. A relatively small proportion of deaths are among the immunized, and those tend to be among the really debilitated, the elderly, and some people who have underlying conditions that predispose to not responding well to the vaccine,” he explained.
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