Police officers patrol in front of the building with the apartment of German Chancellor Angela Merkel, the yellow building second from left, in Berlin, Germany, Sunday, March 22, 2020. Merkel has gone into quarantine Sunday after being informed that a doctor who administered a vaccine to her has tested positive for the new coronavirus. Merkel's spokesman said the German chancellor was informed about the doctor's test shortly after holding a news conference Sunday announcing new measures to restrict public life to curb the spread of the COVID-19 virus.(AP Photo/Markus Schreiber)