Quote: The injected flu vaccine (the flu shot) is made from a killed virus and the nasal flu vaccine (nasal spray) is made from a weakened live virus. Although the nasal spray is made from a live virus, it cannot give a HEALTHY person the flu.
Possible side effects from the injected vaccine include:
- Soreness, redness or pain at the injection site
- Low grade fever
- Body aches
Possible side effects from the nasal vaccine include:
- Runny nose
- Sore throat
- Headache
- Cough
- Nausea and vomiting (in children)
- Fever (in children)
- Muscle aches
Because the nasal flu vaccine is a weakened live virus, people in close contact with people who have severely weakened immune systems should not get the nasal flu vaccine.