Hand, foot, and mouth disease (HFMD) is highly contagious and readily spreads between individuals. Transmission primarily occurs through respiratory droplets (from coughing or sneezing), direct contact with blister fluid, or contact with fecal matter. Individuals are typically most contagious before the rash develops and during the initial 7 to 10 days of illness. Notably, the virus can still be shed and transmitted even after symptoms have disappeared.
To mitigate its spread, affected individuals should rigorously practice frequent handwashing with soap and water, cover their mouth and nose with a tissue when coughing or sneezing (disposing of tissues promptly), refrain from sharing personal items like towels, cups, and utensils, and avoid attending school, daycare, or work until they are no longer infectious.