Even though there is no general obligation to wear a mask in Switzerland, the use of masks is important. The most common way of spreading COVID-19 is through fine water droplets when speaking and breathing. Masks reduce the spread of the virus by blocking the water droplets on the inside of the mask of the wearer when they’re speaking and by holding back the water droplets from the outside of the mask when people are in the vicinity. However, you should be aware of the following points when using masks.