“…The most frequently found unique data source was on seroprevalence ( n = 52) [17–68], followed by hospitalisation ( n = 39) [23, 27, 40, 69–104], primary care ( n = 27) [7, 8, 23, 27, 74, 76, 78–81, 97, 99, 102, 104–117], mortality ( n = 15) [11, 23, 27, 74–76, 79, 80, 84, 91, 97, 118–121], and incidence of reported varicella cases through mandatory surveillance ( n = 14) (Table 1) [5, 26, 27, 40, 79, 80, 101, 116, 122–127]. Varicella community incidence was estimated from 43 seroprevalence data sources from 16 countries [17–27, 29–41, 44–47, 49–54, 57–62, 64, 65, 68], primary care incidence from 17 PCI data sources from 8 countries [23, 74, 76, 79, 80, 99, 101, 102, 104–106, 109, 110, 112, 114, 124, 126], hospitalisation incidence from 18 HI data sources from 10 countries [23, 69–73, 75, 76, 79–81, 84, 87, 90, 91, 94, 102, <...>…”