(HealthDay News) -- The flu vaccine is safe for most people, but some people could experience dangerous complications from the flu vaccine, including an allergic reaction.

The U.S. Centers for Disease Control and Prevention says the following people should not get a flu shot without first speaking to their doctor:

• Anyone with an egg allergy.
• Anyone who has had a previous severe reaction to a flu shot.
• Children younger than 6 months old.
• Anyone who developed a condition called Guillain-Barré Syndrome within six weeks of receiving a previous flu shot.
• Anyone who is ill with a fever should wait until they are healthy again to have the flu shot.