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Leiblein, Thomas W; Winistörfer, Annemarie; Seiler, Kurt; Hauri, Rudolf; Sommerstein, Rami (2024). Association of a coronavirus disease 2019 (COVID-19) vaccine booster with control of a COVID-19 outbreak in a long-term care facility in Switzerland, November to December 2021. Infection control and hospital epidemiology, 45(4), pp. 543-545. Cambridge University Press 10.1017/ice.2023.240