The California Neurology Society (CNS), dedicated to advancing neurological health through education and advocacy, must voice its deep concern regarding recent actions by the U.S. Department of Health and Human Services under Secretary Robert F. Kennedy Jr., which undermine established vaccine science and pose serious risks to public health. Vaccines are among the greatest achievements of modern medicine, preventing illnesses that can cause permanent neurological harm, such as poliomyelitis, measles encephalitis, and fetal brain abnormalities from congenital infections. Their safety and efficacy reflect decades of rigorous research and oversight by independent experts worldwide.
Recent decisions, however, diverge from this evidence-based foundation. Secretary Kennedy’s dismissal of expert advisory bodies, such as the CDC’s Advisory Committee on Immunization Practices (ACIP), and the cancellation of critical mRNA research funding disrupts the scientific progress that enhances vaccine safety and innovation. These actions risk creating public confusion, delaying critical advancements, and weakening our preparedness for future outbreaks. Furthermore, recent guidance that minimizes the importance of routine vaccinations contradicts overwhelming scientific evidence and risks reducing vaccination rates, leaving communities—particularly immunocompromised and neurologically vulnerable patients—exposed to preventable disease.
Drawing on decades of daily experience caring for patients with neurological illness, we know that these policies will result in preventable morbidity, unnecessary suffering, and premature death. The actions of the Secretary represent a serious threat to public health and to the safety of all Americans. For this reason, we urgently call for a change in decision-making leadership at HHS. We know the President is committed to ensuring the nation's health, and we trust that, upon recognizing the dangers these policies pose, he will view such action as both prudent and imperative.
Accordingly, the CNS strongly affirms the science-based guidance of the California Department of Public Health, which reinforces the critical role of vaccination in safeguarding community health. We urge our members to advocate for their patients by sharing accurate information, countering misinformation, and supporting policies that protect the well-being of all Californians.
California Neurology Society Executive Board,
October 13th, 2025
