What’s new this flu season? From the CDC.
A few things are new this season:
Flu vaccines have been updated to better match circulating viruses [the B/Victoria component was changed and the influenza A(H3N2) component was updated.
For the 2018-2019 season, the nasal spray flu vaccine (live attenuated influenza vaccine or “LAIV”) is again a recommended option for influenza vaccination of persons for whom it is otherwise appropriate. The nasal spray is approved for use in non-pregnant individuals, 2 years through 49 years of age. There is a precaution against the use of LAIV for people with certain underlying medical conditions. All LAIV will be quadrivalent (four-component).
Most regular-dose egg-based flu shots will be quadrivalent.
All recombinant vaccine will be quadrivalent. (No trivalent recombinant vaccine will be available this season.)
Cell-grown flu vaccine will be quadrivalent. For this vaccine, the influenza A(H3N2) and both influenza B reference viruses will be cell-derived, and the influenza A(H1N1) will be egg-derived. All these reference viruses will be grown in cells to produce the components of Flucelvax.
No intradermal flu vaccine will be available.
The age recommendation for “Fluarix Quadrivalent” was changed from 3 years old and older to 6 months and older after the annual recommendations were published last season to be consistent with Food and Drug Administration (FDA)-approved labeling.
The age recommendation for Afluria Quadrivalent was changed from 18 years old and older to 5 years old and older after the annual recommendations were published last season to be consistent with Food and Drug Administration (FDA)-approved labeling.
Baloxavir marboxil (trade name Xofluza®) is a new influenza single-dose antiviral drug approved October 24, 2018 by the Food and Drug Administration (FDA). Baloxavir marboxil is approved for the treatment of acute uncomplicated flu in people 12 years old and older who have had flu symptoms for less than 48 hours. More information is available in the FDA press release.
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