Figures & data
Figure 1. The evaluation of influenza viruses and vaccine development. Information from Hannoun et al.Citation8 and McCullers et al.Citation97 *Asian influenza pandemic caused by the shifted A/H2N2 strain and Hong Kong influenza pandemic caused by the shifted A/H3N2 strain: both examples of A-strain shift through reassortment (sharing) of genetic material. LAIV = live-attenuated trivalent influenza vaccine; TIV = trivalent influenza vaccine; QIV = quadrivalent influenza vaccine; WHO = World Health Organization.
![Figure 1. The evaluation of influenza viruses and vaccine development. Information from Hannoun et al.Citation8 and McCullers et al.Citation97 *Asian influenza pandemic caused by the shifted A/H2N2 strain and Hong Kong influenza pandemic caused by the shifted A/H3N2 strain: both examples of A-strain shift through reassortment (sharing) of genetic material. LAIV = live-attenuated trivalent influenza vaccine; TIV = trivalent influenza vaccine; QIV = quadrivalent influenza vaccine; WHO = World Health Organization.](/cms/asset/ef349c02-0a1d-43dd-8d1f-3ec6c2ed9572/khvi_a_1313375_f0001_c.gif)
Figure 2. Results of the literature search (30 October 2016). Search string: “(Quadrivalent OR tetravalent) (influenza vaccine OR flu vaccine) (cost OR burden OR epidemiology OR death OR mortality OR illness OR hospitalisation OR hospitalization)” No limits applied.
![Figure 2. Results of the literature search (30 October 2016). Search string: “(Quadrivalent OR tetravalent) (influenza vaccine OR flu vaccine) (cost OR burden OR epidemiology OR death OR mortality OR illness OR hospitalisation OR hospitalization)” No limits applied.](/cms/asset/c1782680-203a-4aa5-a4c4-f9ebd84dc12a/khvi_a_1313375_f0002_b.gif)
Table 1. Summary of QIV modeling data in different countries: results from a review of the literature.
Table 2. Current recommendations for influenza vaccination using quadrivalent seasonal influenza vaccines (QIVs).