Notes
1 (Bender et al., 2024, 974)
2 (California School Dashboard, 2024)
3 (Pathogen fact sheet)
4 (CDC, 2022)
5 (CDC, 2025)
6 (CDC)
7 (Guerra et al., 2017)
8 (WHO, 2024)
9 (CDC, 2025)
10 (Moss, 2007)
11 (CDC, 2024)
12 (CDC, 2025)
13 (CDPH, 2024)
14 (Pathogen fact sheet)
15 (WHO, 2018)
16 (Ma et al., 2018)
17 (WHO, 2025)
18 (Tiemersma, 2011)
19 (Pathogen fact sheet)
20 (Peterson et al., 2020)
21 (WHO)
22 (Franks, 2003)
23 (Chan-Yeung and Xu, 2003)
24 (Leung et al., 2004)
25 (Feng et al., 2009)
26 (CDC Archive, 2005)
27 (WHO, 2023)
28 (Dr. Oracle, 2025)
29 (Liu and Rocklӧv, 2021)
30 (Bohn et al., 2020)
31 (WHO, 2024)
32 (WHO, 2023)
33 (Zimlich, 2024)
34 (Northwestern, 2024)
35 (Solomon et al., 2024, 36)
36 (Fiorella, 2023)

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