While the flu vaccine is generally safe, it has some limitations and potential side effects:
1. Effectiveness: The vaccine's effectiveness can vary from year to year, depending on the match between the vaccine strains and circulating strains. 2. Side Effects: Common side effects include soreness at the injection site, mild fever, and muscle aches. Serious side effects are rare. 3. Allergic Reactions: Individuals with severe allergies to vaccine components, such as egg protein, should consult their healthcare provider.
