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They call it the "white plague," and like its black counterpart from the Middle Ages, it conjures up visions of catastrophic death, with a cause that was at first uncertain even as it led to widespread destruction - on marine corals in the Caribbean Sea. Now one of the possible causes of this growing disease epidemic has been identified - a group of viruses that are known as small, circular, single-strand DNA (or SCSD) viruses. [Source: Oregon State University]
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