The local churces are blaming it on demons..... but it's just mass hysteria.
Mass hysteria (also called collective hysteria, mass psychogenic illness, or collective obsessional behavior) is the sociopsychological phenomenon of the manifestation of the same or similar hysterical symptoms by more than one person. A common manifestation of mass hysteria occurs when a group of people believe they are suffering from a similar disease or ailment.
Some interesting examples:-
Dancing mania (or choreomania, from the Greek: χορεία (khoreia = 'dance') + μανία (mania = 'madness’)) was a social phenomenon that occurred primarily in mainland Europe between the 14th and 18th centuries; it involved groups of people, sometimes thousands at a time, who danced uncontrollably and bizarrely, seemingly possessed by the devil. Men, women, and children would dance through the streets of towns or cities, sometimes foaming at the mouth until they collapsed from fatigue.
Genital retraction syndrome (GRS), generally considered a culture-specific syndrome, is a condition in which an individual is overcome with the belief that his/her external genitals—or also, in females, breasts—are retracting into the body, shrinking, or in some male cases, may be imminently removed or disappear. A penis panic is a mass hysteria event or panic in which male members of a population suddenly experience this belief.
Penis panics have occurred around the world, most notably in Africa and Asia. Local beliefs in many instances assert that such physical changes are often fatal.