Table 1 Characteristics of included sites
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 |