Hello

Yes the flu vaccine is effective and recommended annually. Children do get very sick from the flu so I recommend it

The flu vaccine is effective but the effectiveness varies from year to year. Receiving the vaccine is certainly better than not having the vaccine. Allergic reactions are not common.

If you get the flu shot, even if thee shot was mismatched for the season your case will usually be mild. Some cases the shot is very effective if it matches the season's flu strand. There is a rare chance of allergy