Public Health Question
FALL 2019
What virus strains is the 2019-2020 flu vaccine formulted to protect against?
ANSWER:
Determined by the World Health Organization (WHO) to be this year’s most circulating or common viruses:
Tri-Valent (3 strain) Vaccine combo
A/Brisbane/02/2018 (H1N1)pdmo9-like virus (updated)A/Kansas/14/2017 (H3N2)-like virus (updated)B/Colorado/06/2017-like (Victoria lineage) virusQuadrivalent (4 strain) Vaccine combo
A/Brisbane/02/2018 (H1N1)pdmo9-like virus (updated)A/Kansas/14/2017 (H3N2)-like virus (updated)B/Colorado/06/2017-like (Victoria lineage) virusplus
B/Phuket/3073/2013-like (Yamagata lineage) virus
As a note:
The two B strains (Victoria and Yamagata) were also components of the 2018-2019 flu vaccine. The H1N1, H3N2 variants represent new strains that were not part of last year’s vaccine combo.