For nearly 3,000 years, variola major—a disease known as smallpox—plagued the planet. From Europe to Africa and Asia, the disease killed as many as 30 percent of those infected. There was no known cure. Even the powerful, once infected, were not immune to an agonizing death. Queen Mary II of England, Emperor Joseph I of Austria, Czar Peter II of Russia and King Louis XV of France—all died of the disease; and in nearly every country deep, distinctive facial scars identified its survivors.
May 1, 2015 6:01 AM CDT