Travel restrictions and lockdown during the COVID-19 pandemic-impact on notified infectious diseases in Switzerland.

Steffen R Department of Public and Global Health, Division of Infectious Diseases, World Health Organization Collaborating Centre for Traveller's Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.
Lautenschlager S Dermatology and Venereology Outpatient Clinics, City Hospitals Waid and Triemli, Zurich, Switzerland.
Fehr J Department of Public and Global Health, Division of Infectious Diseases, World Health Organization Collaborating Centre for Traveller's Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.