HFMD requires two weeks before you can attend school. This is because the quarantine period for HFMD is from the onset of the disease until two weeks later. It is contagious during this time, but it is generally recognized that the most contagious period is from the onset of the disease to one week after the onset of the disease. It is more contagious during this week, and less contagious after one week and up to two weeks. There are many ways to spread HFMD, in addition to direct contact, there is also the possibility of transmission through respiratory droplets, and even during epidemics, may be transmitted through flies, cockroaches and other insects mechanically carrying the virus. Therefore, it is sometimes difficult to carry out direct prevention of the spread of HFMD, and isolation is a better measure.