Seasonal Flu Vaccine

No. The injectable vaccine contains inactivated virus, and the nasal spray contains weakened virus; neither can cause the flu. You may experience mild, temporary side effects like soreness at the injection site, a low-grade fever, or muscle aches, which are normal signs that your body is building protection.

It takes about two weeks after vaccination for antibodies to develop fully. During this time, you should continue practicing good hygiene, such as washing your hands regularly and maintaining a healthy lifestyle.

Yes. Flu viruses change constantly, and the vaccine is updated each year to target the most prevalent strains. Furthermore, your immune protection from vaccination declines over time, so an annual shot is needed for the best protection.

The flu vaccine has a strong safety record. Common side effects are usually mild and include redness or swelling at the injection site, low-grade fever, or tiredness. Serious allergic reactions are very rare.

While the vaccine significantly reduces your risk, no vaccine is 100% effective. If you do get sick, vaccination can often make the illness much milder and prevent serious complications. If you were exposed to the flu shortly before or within the two-week window after vaccination, you could still become ill.