Hand, foot and mouth disease is usually contagious in adults as well. The incidence of HFMD infection in children is much higher than in adults, often because children’s immunity is lower. If they are infected with enteroviruses, such as coxsackievirus and EV71 virus, they will usually show symptoms of HFMD, and children will develop rashes on their hands, feet, mouth and buttocks as well as a rash in their mouth, and children will often have a more painful mouth and will experience significant fever and other discomfort. Adults are generally in better health and have a lower chance of contracting HFMD. However, if adults are infected with HFMD, they are just as infectious as children, especially during the first week of HFMD, which is the peak period of infection. Therefore, HFMD in adults is completely contagious, and if adults are infected with HFMD, it is recommended that they also be isolated at home.