Authorities said on Tuesday that preventative control measures have been implemented, according to state-run media.
It’s the second time the disease, the same one that caused the Black Death, one of the deadliest pandemics in human history, has been detected in the region.
In May, a Mongolian couple died from bubonic plague after eating the raw kidney of a marmot, a type of rodent and the largest member of the squirrel family. Locals in the region believe that consuming the innards of marmots can be beneficial to human health.
The better-known bubonic plague is contracted via interaction with infected animals and by bites from vector fleas, which jump from their rodent carriers to humans. Pneumonic plague, however, is spread through contact with infected humans via droplets in the air produced by coughing. While a bubonic plague infection requires from 2 to 6 days to incubate in the patient, the incubation time for the more virulent pneumonic plague can be as short as 24 hours.
According to the WHO, 3,248 cases of the plague were reported worldwide between 2010 and 2015, with 584 fatal infections. The highest numbers of infections typically occur in Madagascar, the Democratic Republic of the Congo, and Peru. The disease is reported almost annually in Madagascar.
The WHO has classified the plague as a re-emerging disease, as almost 50,000 cases have been reported over the last 20 years.
Septicemic plague (contracted by flea bites or by handling an infected animal) brings with it the above symptoms along with abdominal pain and bleeding into the skin, whereby the skin and extremities turn black and begin to die—hence the term the “Black Death.” Pneumonic plague symptoms include fever, weakness, headache and the rapid onset of pneumonia, accompanied by chest pain and coughing.
Plague outbreaks devastated Europe’s growing population during the Middle Ages, taking the lives of up to 50 million people.