1. National influenza surveillance systems in five European countries: a qualitative comparative framework based on WHO guidance;de Fougerolles;BMC Public Health,2022
2. Influenza surveillance in Europe: comparing intensity levels calculated using the moving epidemic method;Vega;Influenza Other Respir Viruses,2015
3. Rapidly adapting primary care sentinel surveillance across seven countries in Europe for COVID-19 in the first half of 2020: strengths, challenges, and lessons learnt;Bagaria;Euro Surveill,2022
4. Severe acute respiratory infections (SARI);Report Protoc,2023
5. Surveillance for severe acute respiratory infections (SARI) in hospitals in the WHO European region – an exploratory analysis of risk factors for a severe outcome in influenza-positive SARI cases;Meerhoff;BMC Infect Dis,2015