Efficacy of vaccine policy is at risk with CDC's new advisory board

This episode of 'Ask an Expert' on KCBS explores growing concerns over the stability and integrity of U.S. vaccine policy following a controversial overhaul of the CDC's Advisory Committee on Immunization Practices (ACIP). Dr. Peter Chin Hong, an infectious disease specialist at UCSF, details how the abrupt firing of all 17 ACIP members in June 2025 and their replacement with 12 unvetted appointees—without proper transparency or conflict-of-interest reviews—has undermined public trust. He warns that this political interference has contributed to declining vaccination rates nationwide, increasing the risk of preventable diseases like measles, mumps, pertussis, and even polio, which remains detectable in wastewater. Dr. Chin Hong emphasizes the critical role of herd immunity, especially for vulnerable populations like infants under six months who rely on maternal antibodies and community protection. He also addresses misinformation, particularly the debunked claim linking vaccines to autism, and urges parents to rely on trusted healthcare providers and state public health agencies rather than conflicting federal messaging. With rising disease threats and waning immunity—especially among seniors—Dr. Chin Hong expresses deep concern about future outbreaks, including the potential for a resurgence of diseases thought to be eradicated.