Robot Franziska cleans the floor as a replacement for the missing cleaning personnel due to the coronavirus disease (COVID-19) pandemic during a three-week test phase at the Neuperlach hospital in Munich, Germany, Jan. 25, 2021. (Photo/Agencies)

Hospital staff work while Robot Franziska cleans the floor as a replacement for the missing cleaning personnel due to the coronavirus disease (COVID-19) pandemic during a three-week test phase at the Neuperlach hospital in Munich, Germany, Jan. 25, 2021. (Photo/Agencies)

Robot Franziska cleans the floor as a replacement for the missing cleaning personnel due to the coronavirus disease (COVID-19) pandemic during a three-week test phase at the Neuperlach hospital in Munich, Germany, Jan. 25, 2021. (Photo/Agencies)

Robot Franziska cleans the floor as a replacement for the missing cleaning personnel due to the coronavirus disease (COVID-19) pandemic during a three-week test phase at the Neuperlach hospital in Munich, Germany, Jan. 25, 2021. (Photo/Agencies)