Simply breathing and speaking can expel droplets which may contain contagious diseases, singing and shouting even more so. However, the real champions at spreading diseases are coughs (up to 3000 droplets) and sneezes (upwards of 100,000 droplets).
Lookout Sneezeguards are made of 5mm crystal clear acrylic and are designed for face to face interaction and to limit contact. They simply slot together and sit on the desktop, no assembly or installation required.
Acts as a great screen / divider for desktop use.