How long is hand foot and mouth disease contagious?

Hand Foot and Mouth: A person is most contagious during the first week of the illness. Those with hand foot and mouth disease can also be contagious for several weeks after onset. Here is more about hand foot and mouth disease from the Centers for Disease Control- CDC https://www.cdc.gov/hand-foot-mouth/about/transmission.html

A short time.: It is moderately contagious and is spread through direct contact with the mucus, saliva, or feces of an infected person. A person is contagious when the first symptoms appear and may continue until the blister-like skin lesions disappear.