Effectiveness of COVID-19 vaccines in preventing SARS-CoV-2 infection and hospitalisation, Navarre, Spain, January to April 2021 Martínez-Baz, Iván and Miqueleiz, Ana and Casado, Itziar and Navascués, Ana and Trobajo-Sanmartín, Camino and Burgui, Cristina and Guevara, Marcela and Ezpeleta, Carmen and Castilla, Jesús and Working Group for the Study of COVID-19 in Navarra, Eurosurveillance, 26, 2100438 (2021), https://doi.org/10.2807/1560-7917.ES.2021.26.21.2100438