Monday, November 1, 2010

Three Of History's Scourges -- Separated By Half-Millennia Each, Due To Single Bug? Amazing DNA Evidence: NYT


Great story in this morning's New York Times -- do go read it all:

. . . .The great waves of plague that twice devastated Europe and changed the course of history had their origins in China, a team of medical geneticists reported Sunday, as did a third plague outbreak that struck less harmfully in the 19th century. . . .

The Black Death began in Europe in 1347 and carried off an estimated 30 percent or more of the population of Europe. For centuries the epidemic continued to strike every 10 years or so, its last major outbreak being the Great Plague of London from 1665 to 1666. The disease is spread by rats and transmitted to people by fleas or, in some cases, directly by breathing. . . .

The Black Death is the middle of three great waves of plague that have hit in historical times. The first appeared in the 6th century during the reign of the Byzantine emperor Justinian, reaching his capital, Constantinople, on grain ships from Egypt. The Justinian plague, as historians call it, is thought to have killed perhaps half the population of Europe and to have eased the Arab takeover of Byzantine provinces in the Near East and Africa.

The third great wave of plague began in China’s Yunnan province in 1894, emerged in Hong Kong and then spread via shipping routes throughout the world. It reached the United States through a plague ship from Hong Kong that docked at Hawaii, where plague broke out in December 1899, and then San Francisco, whose plague epidemic began in March 1900. . . .

Do go read it all -- truly fascinating, and a reminder of how astonishing the pursuit of pure science can be.

No comments: