INFLUENZA A VIRUS A/SWITZERLAND/3330/2017 (H1N1) LIVE (ATTENUATED) ANTIGEN; INFLUENZA A VIRUS A/KANSAS/14/2017 (H3N2) LIVE (ATTENUATED) ANTIGEN; INFLUENZA B VIRUS B/PHUKET/3073/2013 LIVE (ATTENUATED) ANTIGEN; INFLUENZA B VIRUS B/COLORADO/06/2017 LIVE (ATTENUATED) ANTIGEN