Rapidly adapting primary care sentinel surveillance across seven countries in Europe for COVID-19 in the first half of 2020: strengths, challenges, and lessons learned Bagaria, Jayshree and Jansen, Tessa and Marques, Diogo FP and Hooiveld, Mariette and McMenamin, Jim and de Lusignan, Simon and Vilcu, Ana-Maria and Meijer, Adam and Rodrigues, Ana-Paula and Brytting, Mia and Mazagatos, Clara and Cogdale, Jade and van der Werf, Sylvie and Dijkstra, Frederika and Guiomar, Raquel and Enkirch, Theresa and Valenciano, Marta and I-MOVE-COVID-19 study team, Eurosurveillance, 27, 2100864 (2022), https://doi.org/10.2807/1560-7917.ES.2022.27.26.2100864