Feds passed up chance to lock in more Pfizer vaccine doses

In this Monday, July 27, 2020 file photo, a nurse prepares a syringe during a study of a possible COVID-19 vaccine, developed by the National Institutes of Health and Moderna Inc., in Binghamton, N.Y. (AP Photo/Hans Pennink)

WASHINGTON — The Trump administration opted last summer not to lock in a chance to buy millions of additional doses of one of the leading coronavirus vaccine contenders, a decision that could delay the delivery of a second batch of doses until manufacturer Pfizer fulfills other international contracts.