RT Journal Article SR Electronic(1) A1 Otte im Kampe, Eveline A1 Lehfeld, Ann-Sophie A1 Buda, Silke A1 Buchholz, Udo A1 Haas, Walter YR 2020 T1 Surveillance of COVID-19 school outbreaks, Germany, March to August 2020 JF Eurosurveillance VO 25 IS 38 SP 2001645 OP DO https://doi.org/10.2807/1560-7917.ES.2020.25.38.2001645 UL https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2020.25.38.2001645