Amid continuing tensions in the Central African Republic, rival Christian and Muslim militias in one part of the capital Bangui have declared a truce and shaken hands in public.
Most people around the world now greet each other by shaking hands, but some cultures use other greetings as well, such as the Japanese, who prefer to bow.
Americans are being encouraged to avoid shaking hands and sharing food, to disinfect door knobs, to regularly clean utensils and especially to wash our hands.