Updated Evidence for COVID-19, RSV, and Influenza Vaccines for 2025-2026
( N Engl J Med . 2025 Dec 4;393(22):2221–2242. doi: 10.1056/NEJMsa2514268) In the United States, changes in federal messaging surrounding vaccines have caused disruption to guidance for immunization, though it is known that respiratory illnesses such as respiratory syncytial virus (RSV), influenza, and severe ac...