A Mongolian couple has died of the bubonic plague after eating raw marmot kidney, triggering a quarantine that left tourists stranded in a remote region for days, officials said Monday. The ethnic Kazakh couple died on May 1 in Nogoonnuur soum, in Mongolia's westernmost province of Bayan-Ulgii, which borders Russia and China. A six-day quarantine was declared for people in the region, preventing nine tourists from Russia, Germany and Switzerland from leaving. The quarantine was lifted on May 6 after no other cases of the plague were reported. Authorities have warned people against eating raw marmot meat because it can...