MARBURG - A mysterious viral infection has forced military authorities in Germany to close four bases, ordering nearly 4,000 personnel and their dependents to stay home, authorities said Friday. The bases Schwalmstadt, Schwarzenborn, Stadtallendorf and Neustadt will be closed for three weeks while the premises are disinfected. "This is the worst single such infectious situation we've ever had," a Defence Ministry spokesman said Friday. The viral epidemic began in Schwalmstadt in the central German state of Hesse, when 150 of the 800 personnel stationed there complained of inflamed and itching eyes. The Bundeswehr closed that base last week. Just four...