Pfizer vaccine shipment expected later this week adds to 327,000 doses already being distributed. Some 672,000 doses of the Moderna vaccine are expected by the end of the month.
Some years from now, infants and school-aged children will probably be the mainstay of a universal vaccination program against COVID-19 in the United States. But first, doctors want to be sure that vaccines won't harm them.
The average turnaround time for test results rose 30% in Nov as people flocked to test sites before Thanksgiving. Pressure on labs is expected to intensify.