Health and Human Services Secretary Robert F. Kennedy Jr., a noted vaccine skeptic, voiced support for the measles vaccine Sunday amid a deadly outbreak in the Southwest, mainly in Texas.

The warning against measles parties comes days after an unvaccinated child died of measles in Lubbock County about month after an outbreak began in West Texas.

The U.S. Centers for Disease Control and Prevention upheld the role of vaccines in offering protection against measles after an unvaccinated child succumbed to the infection earlier this week. The U.S.