Who developed the flu shot?
Influenza vaccine
an A/Michigan/45/2015 (H1N1)pdm09-like virus
an A/Singapore/INFIMH-16-0019/2016 (H3N2)-like virus
a B/Colorado/06/2017-like virus (B/Victoria/2/87 lineage)
a B/Phuket/3073/2013-like virus (B/Yamagata/16/88 lineage)