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In addition to reductions at agency personnel, federal regulators are demanding $2.9 billion in contract cancellations, The Times has learned.

The reorganization that began on Tuesday will scale back an agency that has been a public health model around the world.

The agency's injury center was among the departments that were largely gutted in Tuesday's wave of dismissals. Read a staff member's letter to colleagues while they awaited their fates.

The court will decide whether Medicaid beneficiaries may sue to receive services under a law that lets them choose any qualified provider.

The justices said the Food and Drug Administration had acted lawfully in rejecting applications from makers of flavored liquids used in e-cigarettes.

A growing body of research suggests that preventing the viral infection can help stave off cognitive decline.

A new survey found that 11 percent of Americans said they could not pay for medication and medical treatments.

Health Secretary Robert F. Kennedy Jr. suggests that laying off thousands of federal workers would tame a massive budget. But nearly all of the agency's money goes to hospitals, doctors and nursing homes.

Senator Josh Hawley, a Republican, pressed Dr. Oz on transgender care and abortion, and now says he will vote for the physician's confirmation to become head of Medicare and Medicaid.

The United States was a key supplier of contraceptives in many developing countries. The Trump administration has ended that support.