Cases of hand, foot, and mouth disease on the rise in Japan

in most cases, patients are cured

No, they are not 'cured', there is no cure for hand, foot and mouth disease. It's caused by a virus and gets better by itself.

Hand washing and keeping anyone infected or suspected of being infected at home and away from others will help stop it spreading.

"Hand washing" no going to happen in Japan. Most facilities do not even have soap in them.