In the 18 days since Robert F. Kennedy Jr. was sworn in as secretary of the United States Department of Health and Human Services, his department has postponed or canceled two major vaccine advisory committee meetings,

Amid a growing outbreak of measles in Texas, recently confirmed Health Secretary Robert F. Kennedy Jr. is urging parents to vaccinate their children against the disease. While such a recommendation would usually be unremarkable for a secretary of Health and Human Services,

The Health and Human Services Department is reviewing contracts and moving to replace vaccine advisers in Robert F. Kennedy Jr.’s first few weeks at the helm.