Flu Vaccine Topic Guide
Flu Vaccine: Flu vaccines may be composed of weakened live flu viruses or killed viruses that protect a person from developing influenza once administered. Reactions to the seasonal flu and H1N1 flu nasal-spray vaccines and shots include headache, nasal congestion, low-grade fever, sore throat, and muscle cramps.
H1N1 Nasal Spray Vaccine The H1N1 nasal spray vaccine 2009 is an attenuated (live virus) vaccine to prevent the H1N1 influenza (swine flu). There are certain groups of individuals who should not receive this vaccine.
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