The Centers for Disease Control and Prevention (CDC) recommend a yearly flu vaccination for everyone age 6 months and older (who do not have contraindications) as the first and most important step in protecting against the flu. You should get the vaccine as soon as it becomes available as it causes antibodies to develop in the body about two weeks after vaccination. The vaccine's protection lasts throughout the flu season.
In light of low effectiveness against influenza A(H1N1)pdm09 in the United States during the 2013–14 and 2015–16 seasons, for the 2016–17 season, ACIP makes the interim recommendation that LAIV4 should not be used. Because LAIV4 is still a licensed vaccine that might be available and that some providers might elect to use, for informational purposes, reference is made to previous recommendations for its use.
For the 2016-2017 season, CDC recommends use of the flu shot (inactivated influenza vaccine or IIV) and the recombinant influenza vaccine (RIV). The nasal spray flu vaccine (live attenuated influenza vaccine or LAIV) should not be used during 2016-2017. The 2016-2017 influenza vaccination recommendations are now available.
For the most current information, click here to visit the CDC's web page. For additional information, click on the FLU.gov box to the right.