Medicine: The Laughing Death

In the eastern highlands of New Guinea, sudden bursts of maniacal laughter shrilled through the walls of many a circular, windowless grass hut, echoing through the surrounding jungle. Sometimes, instead of the roaring laughter, there might be a fit of giggling. When a tribesman looked into such a hut, he saw no cause for merriment. The laugher was lying ill, exhausted by his guffaws, his face now an expressionless mask. He had no idea that he had laughed, let alone why. New Guinea's Fore (pronounced foray) tribe was afflicted by a deadly foe....

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