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Table 1 Characteristics of included sites

From: Complicated hospitalization due to influenza: results from the Global Hospital Influenza Network for the 2017–2018 season

Coordinating site Number of hospitals Included patients Inclusion period (calendar week and year of influenza season) Influenza transmission zone a
St. Petersburg (Russian Federation) 7 3101 Week 2 to 21, 2018 Eastern Europe
Spain (Valencia) 4 2841 Week 45, 2017 to week 20, 2018 South West Europe
Moscow (Russian Federation) 1 1247 Week 3 to 19, 2018 Eastern Europe
South Africa (Johannesburg) 2 1123 Week 15 to 42, 2018 Southern Africa
Canada (Halifax) 14 1026 Week 50, 2017 to week 17, 2018 North America
Mexico (Mexico City) 6 701 Week 42, 2017 to week 13, 2018 Central America Caribbean
India (Srinagar) 1 609 Week 41, 2017 to week 9, 2018 Southern Asia
Serbia (Novi Sad) 4 590 Week 52, 2017 to week 15, 2018 South West Europe
Romania (Bucharest) 1 492 Week 49, 2017 to week 16, 2018 Eastern Europe
China (Shanghai) 1 399 Week 49, 2017 to week 11, 2018 Eastern Asia
Kenya (Nairobi) 2 386 Week 4 to 32, 2018 Eastern Africa
Czech Republic (Prague) 1 117 Week 52, 2017 to week 12, 2018 Eastern Europe
Lyon (France) 1 98 Week 50, 2017 to week 13, 2018 South West Europe
Argentina (Buenos Aires) 1 73 Week 30 to 39, 2018 Temperate South America
All sites 46 12,803   
  1. a World Health Organization influenza transmission zone [14]