FluMist is a flu vaccine administered through a nasal spray rather than an injection. The nasal spray is available for healthy people between ages 5 and 49. Because the spray contains a live virus, it’s not recommended if you have a chronic medical condition or take anti-rejection medications.
The nasal vaccine stimulates your immune system to build up antibodies to fight off the infection. Your body stores these antibodies, which spring into action if you get the flu.
Possible side effects of the nasal spray include:
Children may also experience fever as a side effect of the nasal spray.
(Source: Mayo Clinic, online at www.mayoclinic.com.)