The US Deputy Secretary of Health and Human Services stated that federal vaccine guidelines are not final and remain subject to updates as new scientific data emerges. The official emphasized that guidelines from agencies like the CDC and NIH are living documents designed to adapt to evolving research on vaccine efficacy, safety, and public health needs. This flexibility is presented as a strength of the scientific process, allowing recommendations to be refined in response to real-world evidence and emerging variants. The comments underscore the dynamic nature of public health guidance in a rapidly changing landscape. Read the full article at: https://www.technologyreview.com/2026/02/13/1132889/us-deputy-health-secretary-vaccine-guidelines-longevity-arpa-h-cdc-nih/