%0 Journal Article %A Markus, Inessa %A Steffen, Gyde %A Lachmann, Raskit %A Marquis, Adine %A Schneider, Timm %A Tomczyk, Sara %A Koppe, Uwe %A Rohde, Anna M %A Schink, Susanne Barbara %A Seifried, Janna %A Domaszewska, Teresa %A Rexroth, Ute %A an der Heiden, Maria %T COVID-19: cross-border contact tracing in Germany, February to April 2020 %D 2021 %J Eurosurveillance %V 26 %N 10 %P 2001236 %R doi:https://doi.org/10.2807/1560-7917.ES.2021.26.10.2001236 %K International Health Regulations %K cross-broader %K Germany %K Early Warning and Response System (EWRS) COVID-19 %K SARS-CoV-2 %K contact tracing %K pandemic preparedness %U https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2021.26.10.2001236