A systematic review of 511 studies showed that immunization against COVID-19, RSV, and influenza was safe and effective in people of all ages. The researchers reviewed the latest evidence since the ...
Flu and COVID-19 sign outside a clinic entrance. Every year, flu vaccines are updated to match the flu viruses expected to circulate. For 2026, the vaccine focuses on several influenza strains that ...
Some surveys have shown that nearly 30% of people believe getting a flu shot can actually cause influenza. This belief is likely due to common side effects linked to the vaccine, including headache, ...