Impact of universal masking in health care and community on SARS-CoV-2 spread

Universal masking the health care setting and in the community to contain the spread of SARS-CoV-2 has been recently recommended by the WHO, but supporting data are rare. The City of Jena was the first community in Germany to issue an order on mandatory public masking. Here, we report the development of the number of novel infections in our hospital and in the city of Jena after implementation of universal masking in our hospital and the city.