School-based surveillance for influenza vaccine effectiveness during 2014-2015 seasons in Hong Kong.
Ting-Fan LeungRenee W Y ChanAngela KwokWendy C S HoMars K P TaoKam L HonFrankie W T ChengAlbert M LiPaul K S ChanPublished in: Influenza and other respiratory viruses (2017)
Mild laboratory-confirmed influenza infection is common in children during influenza seasons. Influenza vaccination is effective against ILI but not mild infection identified by surveillance.