Health officials are urging people to get updated flu shots before infections intensify later this fall and winter.
The annual vaccine is recommended for nearly everyone 6 months and older, with limited exceptions.
This season’s shots are designed to protect against the influenza strains experts expect to circulate most widely.
Protection takes about two weeks to build, making early vaccination especially important for older adults, young children, pregnant people and those with chronic health conditions.
People who are sick should consult a health care provider about the right time to be vaccinated, while those with a history of severe vaccine reactions should seek medical guidance first.
The flu vaccine may not prevent every infection, but it can reduce the risk of serious illness, hospitalization and complications. It can also help limit the spread of the virus to vulnerable family members and communities. Alongside vaccination, regular handwashing, staying home when ill and improving indoor ventilation remain useful precautions.