What are the different types of flu vaccines?
There are two types of flu vaccines: A “flu shot” that is delivered by injection and a nasal-spray flu vaccine. The flu shot that so many of us are familiar with contains killed, or inactivated, virus. The nasal-spray flu vaccine is made with live, weakened flu viruses that will not cause the flu. Nasal-spray flu vaccine is approved for healthy people from 2-49 years of age who are not pregnant. Both vaccines contain at least three strains of flu viruses based on scientists predictions of which types of flu are most likely to circulate this year. Whichever flu vaccine you receive, antibodies against the flu will develop in your body about two weeks later.
