Mandating vaccine good
See People at High Risk of Developing Flu-Related Complications for a full list of age and health factors that confer increased risk.More information is available at Who Should Get Vaccinated Against Influenza.Optimally, vaccination should occur before onset of influenza activity in the community.Health care providers should offer vaccination by the end of October, if possible.Since it takes about two weeks after vaccination for antibodies to develop in the body that protect against influenza virus infection, it is best that people get vaccinated so they are protected before influenza begins spreading in their community.CDC conducts science-based investigations, research, and public health surveillance both nationally and internationally.Trivalent flu vaccines include: The seasonal flu vaccine protects against the influenza viruses research indicates will be most common during the upcoming season.
Vaccination to prevent influenza is particularly important for people who are at high risk of serious complications from influenza.
CDC recommends use of a flu shot; either an inactivated influenza vaccine or (IIV) or a recombinant influenza vaccine (RIV).
The nasal spray flu vaccine (live attenuated influenza vaccine or LAIV) should not be used during 2017-2018.
CDC recommends use of injectable influenza vaccines (including inactivated influenza vaccines and recombinant influenza vaccines) during 2017-2018.
Both trivalent (three-component) and quadrivalent (four-component) flu vaccines will be available.