The 2017-2018 Flu Season, What’s the Difference Inside a Vaccine?

The Centers for Disease Control and Prevention (“CDC”) have released an information update concerning the 2017 -2018 flu season. As they did last season, the CDC recommends AGAINST using the live attenuated influenza vaccine (LAIV) nasal spray this year and ONLY recommends using an injectable trivalent or quadrivalent seasonal flu vaccine.

So, what’s up with the two vaccine types recommended by the CDC?

Importantly, note that you cannot get the flu from either type of injectable vaccine.

These vaccines can either be a recombinant influenza vaccine (“RIV”) or an inactivated influenza vaccine (“IIV”). The trivalent flu vaccine protects against three different strains of flu virus, two influenza A and one influenza B, while the quadrivalent protects against four different strains, two A and two B.  The trend towards…


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Ramon Rodriguez is a member of Sands Anderson’s Vaccine Injury Legal Team and represents individuals and families who have developed injuries related to vaccines.