Robert F. Kennedy Jr. also disclosed that he had reached at least one settlement agreement with a company or individual that has accused him of “misconduct or inappropriate behavior.”

When we face some risk of a bird flu pandemic, do we want to entrust our health to a man who has fought lifesaving vaccines?

Robert F. Kennedy, President Trump’s nominee for health secretary, vigorously defended his views on vaccines, and a key senator still has clear doubts.

Senators had objected to the financial conflict posed by Robert F. Kennedy Jr.’s decision to retain a financial stake in lawsuits against a major drug company. It remains unclear whether any proceeds would be redirected.

Robert F. Kennedy Jr., the nominee to lead the Department of Health and Human Services, made disputed claims before the Senate Committee on Health, Education, Labor and Pensions.

Robert F. Kennedy Jr., Kash Patel and Tulsi Gabbard, three of President Trump’s high-profile picks, on Thursday will make their cases for confirmation.

Opinion writers discuss issues from vaccines to Medicaid.

If confirmed as health secretary, Robert F. Kennedy Jr. would oversee the Food and Drug Administration and other agencies that issue key decisions for drug companies.

Many of the frozen programs are aimed at alleviating disease and malnutrition, but even security programs with U.S. funding are shutting down.

In a scathing letter to lawmakers weighing Robert F. Kennedy Jr.’s nomination for health secretary, Ms. Kennedy called her cousin unfit for the job and a “predator” who led family members to addiction.

Mr. Kennedy appears to have most Republicans behind him as he seeks the job of health secretary, though he couldn’t escape his past stances on vaccines and abortion.

As he seeks to lead the health department, Mr. Kennedy wore a thin tie dotted with feathered creatures to cap a classic suit.

In “Eureka Day,” changes were made to a scene because “the laughter was so robust backstage, they couldn’t hear the cues.”

A pandemic is not inevitable, scientists say. But the outbreak has passed worrisome milestones in recent weeks, including cattle that may have been reinfected.

As trust in medicine declines and vaccine hesitancy spreads, doctors are changing how they talk about lifesaving childhood shots.

R.F.K. Jr. and others have blamed the ingredient for allergies and other illnesses. Scientists say it actually bolsters the immune response.

In a wide-ranging interview, Xavier Becerra, President Biden’s health secretary, defended his tenure and hinted that he might run for governor of California.

There are an estimated 300,000 polio survivors in the United States. For some, the nomination of Robert F. Kennedy Jr. as health secretary is reviving their painful memories.

In its original form, the virus survives in just two countries. But a type linked to an oral vaccine used in other nations has already turned up in the West.