Data Correction Drops COVID Vaccine Rates in Pennsylvania


The U.S. Centers for Disease Control and Prevention this week lowered its percentage of adults vaccinated in Pennsylvania by nearly five percentage points in what was apparently a data correction to eliminate duplicates.

The agency adjusted the percentage to 68.9% on Wednesday, after updating the percentage to 73.7% of Pennsylvanians aged 18 and over a day earlier.

The downward revision amounted to a reduction of approximately 1.2 million doses.

The Pennsylvania Department of Health said it was sending its data to the CDC and in July began refining its data to remove duplicate information and correct data on the first, second and booster doses.

“On November 23, the CDC began rectifying its data to match Pennsylvania’s COVID-19 vaccine data and we anticipate that the CDC will follow a similar process with other states across the country,” said the department in a press release.

The data correction comes as infections, hospitalizations and intensive care unit cases increase in Pennsylvania and many other states.

The department said Wednesday there were 3,349 people hospitalized with COVID-19 in Pennsylvania, up about 21% in November. That includes 763 in intensive care, up about 17% in November.

More than 33,000 people in Pennsylvania have died from COVID-19, according to Department of Health data.


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