The nasal flu spray is used to prevent influenza virus infection. Each year the vaccine is prepared using live influenza virus materials. The Centers for Disease Control and Prevention (CDC) suggests the mist exposes the body to a small dose of the virus to help it develop immunity to the illness. Drugs.com points out that children and adults between the ages of 2 and 49 years old can use the nasal flu spray. As with any vaccine, the nasal flu spray has the potential for side effects.
Flu-Like Side Effects
An individual may develop mild, flu-like side effects after the administration of the nasal flu vaccine. The Mayo Clinic suggests that these may be attributed to the live virus in the vaccine or due to exposure to a virus not contained in the vaccine. Flu-like symptoms identified by the Mayo Clinic may include a mild fever, chills, runny nose, stuffy nose, sore throat, cough, headache, irritability, fatigue, vomiting or muscle pain. RxList.com also suggests users may experience a decrease in appetite or activity.
Serious Side Effects
The Mayo Clinic urges individuals to seek medical attention if serious side effects occur. Serious hazards the Mayo Clinic suggests may be caused by the nasal flu vaccine include severe weakness, unusual sensations in the arms or legs, high fever, chills, body aches and other flu symptoms.
Allergic Reaction
Allergic reaction to the nasal flu vaccine may be serious. Symptoms to look for, as indicated by the Mayo Clinic, include hives; difficulty breathing; swelling of the face, lips, tongue or throat.
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