Letter to the editor: Increase of influenza vaccination coverage rates during the COVID-19 pandemic and implications for the upcoming influenza season in northern hemisphere countries and Australia Del Riccio, Marco and Lina, Bruno and Caini, Saverio and Staadegaard, Lisa and Wiegersma, Sytske and Kynčl, Jan and Combadière, Béhazine and MacIntyre, Chandini Raina and Paget, John, Eurosurveillance, 26, 2101143 (2021), https://doi.org/10.2807/1560-7917.ES.2021.26.50.2101143