Dr. David Weldon, the nominee to head the CDC, is likely to face questions about his vaccine views during his confirmation hearing. Weldon, a retired Florida congressman, is known for his alignment with anti-vaccine activists and his support for alternative medicine. Critics are concerned about his lack of experience in federal public health and his potential impact on the agency's mission. Democrats are expected to press Weldon on his vaccine views and his plans for the CDC under a health secretary who has shown disdain for the agency.