Figures & data
Figure 1. Source: Schiavo, Citation2016 [Citation7]. References: [Citation7–15]. Copyrights @2016–2020 Renata Schiavo. Used by permission. Photo Credits (from left to right): Public Health Image Library (PHIL)/Centers for Disease Control and Prevention (CDC); PHIL/CDC/ Humphrey, C.D.; Ksiazek, T.G.; CDC/CDC Influenza Laboratory; PHIL/CDC/ CDC/ Goldsmith, C.
![Figure 1. Source: Schiavo, Citation2016 [Citation7]. References: [Citation7–15]. Copyrights @2016–2020 Renata Schiavo. Used by permission. Photo Credits (from left to right): Public Health Image Library (PHIL)/Centers for Disease Control and Prevention (CDC); PHIL/CDC/ Humphrey, C.D.; Ksiazek, T.G.; CDC/CDC Influenza Laboratory; PHIL/CDC/ CDC/ Goldsmith, C.](/cms/asset/f8b03220-387f-4352-b96d-58f6d959bf25/ycih_a_1762983_f0001_oc.jpg)