A man representing the University of Health holds a sign with a message reads in Spanish; "Use your face mask correctly," as he offers hand sanitizer and disposable masks to pedestrians he new coronavirus pandemic, in Mexico City, Wednesday, Nov. 18, 2020. Mexico on Saturday topped 1 million registered COVID-19 cases and nearly 100,000 test-confirmed deaths, though officials agree the number is probably much higher. (AP Photo/Rebecca Blackwell)

18 November 2020, Berlin: A mouth and nose guard floats together with leaves in the water of a pond in a park. Photo: Jens Kalaene/dpa-Zentralbild/ZB

18 November 2020, Berlin: A mouth and nose guard floats together with leaves in the water of a pond in a park. Photo: Jens Kalaene/dpa-Zentralbild/ZB

18 November 2020, Berlin: A mouth and nose guard floats together with leaves in the water of a pond in a park. Photo: Jens Kalaene/dpa-Zentralbild/ZB

14 November 2020, Saxony, Leipzig: A model of a coronavirus lies over a mouth-nose cover. Photo: Peter Endig/dpa-Zentralbild/ZB