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Comparison of live attenuated influenza vaccine versus killed inactivated trivalent influenza vaccine
| Factor | LAIV | TIV |
|---|---|---|
| Route | Intranasal spray | Intramuscular injection |
| Type of vaccine | Live virus | Killed virus |
| Number of strains in vaccine | 2 type A and 1 type B | 2 type A and 1 type B |
| Vaccine strains updated | Annually | Annually |
| Approved age and risk groups | Healthy persons; age 5–49 y | Persons ≥6 mo old |
