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Table 1 Regional source of enrolled influenza-like illness (ILI) cases <5 years of age from surveillance at Suzhou University Affiliated Children’s Hospital, 2011–2014

From: Influenza-associated outpatient visits among children less than 5 years of age in eastern China, 2011–2014

Area Resident populationb
N (%)
Enrolled ILI casesc
N (%)
Municipal districta 90,756 (43.4) 3,173 (84.9)
Counties 118,520 (56.6) 458 (12.2)
 Wujiang 25,082 (12.0) 232 (6.2)
 Kunshan 23,503 (11.2) 165 (4.4)
 Changshu 29,222 (14.0) 31 (0.8)
 Zhangjiagang 28,178 (13.5) 23 (0.6)
 Taicang 12,535 (6.0) 7 (0.2)
Outside Suzhou - 108 (2.9)
  1. aMunicipal district comprises Gusu district, New and High-tech district, Wuzhong district, Xiangcheng district and Industrial Park (Fig. 1)
  2. bResident population (refers to people living in Suzhou for more than 6 months) was obtained from the Suzhou immunization platform in 2010, which covered at least 95 % of the population of children in Suzhou
  3. cData from influenza surveillance for ILI in children <5 years old at Suzhou Children’s Hospital during 2011–2014