The NY Times reported that Health and Human Services officials have reversed the decision to fire a few dozen scientists at the Food and Drug Administration’s food-safety labs, and say they are conducting a review to determine if other critical posts were cut. The H.H.S. spokesman said those employees called back had been inadvertently fired because of inaccurate job classification codes.

The decision to rehire specialists on outbreaks of food-related illnesses and those who study the safety of products like infant formula follows contradictory assertions made by Dr. Marty Makary, the F.D.A. commissioner, in media interviews this week. “I can tell you there were no cuts to scientists or inspectors,” Dr. Makary said Wednesday on CNN. In fact, scientists had been fired from several food and drug safety labs across the country, including in Puerto Rico, and from the veterinary division where bird flu safety work was underway.

About 40 employees at the Moffett Lab in Chicago and at a San Francisco-area lab are being offered their jobs back, the department spokesman said. Scientists in those labs studied a variety of aspects of food safety, from how chemicals and germs pass through food packaging to methods for keeping bacteria out of infant formula. Some scientists in Chicago reviewed the work and results of other labs to ensure that milk and seafood were safe.