Topic: Epidemic of laughter and the fact of a recognition mass
The interesting fact: Three schoolgirls started to laugh and cry uncontrolledly, their laughter infected 95 of 159 schoolgirls, age from 12 till 18 years [5  . The laughter proceeded from several o'clock till 16 days. The laughter was not spread to teachers, but schoolgirls could not retain attention to study because of what on March, 18th, 1962 school temporarily closed . On May, 21st occupations tried to restart, but it did not manage to be made (epidemic by that moment was already selected for village limits) .... On school in which epidemic began, brought an action. The uncontrolled laughter enveloped somewhat all schools Kashashi and adjacent village . Epidemic came to an end in 18 months after the beginning . Except laughter it was informed on accompanying symptoms: pains, faints, , problems with breath, rashes, attacks of crying and shouts . In total 14 schools have been closed, more than 1000 persons got under action of epidemic . Here WIKI. Thus nobody knows why the such happened and as with similar to struggle. Like from mind on a singleton descend (). . No. Why we accuse people who underwent to a mass hysteria (as that nazi germanium or event in 2013-2014)? It turns out with everyone can happen. It is necessary simply that human society to recognize subject to the given disorder and to invent as with it to struggle.