Booster Information

Guidelines for maintaining long-term immunity

Immunity from some vaccines fades over time. Boosters "remind" your immune system to maintain high levels of protective antibodies.

Viruses like Influenza and SARS-CoV-2 mutate rapidly. Annual boosters are updated to match the circulating strains.

For most vaccines (like Tdap or HepB), you do NOT need to restart the whole series. Just get the missed dose as soon as possible.

Routine Adult Boosters

1 dose annually

Varies year-to-year (usually 40-60%) depending on strain match.

Varies based on history and current formulation

Highly effective at preventing severe disease and hospitalization.