To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video In the space of a few weeks in 2015, a mysterious disease tore through the saiga antelope population in the Betpak-Dala region of Kazakhstan. It killed 90% of the already rare animals.   A team from the Frankfurt Zoological Society and the UK's Royal Veterinary College identified the culprit: A usually harmless bacteria that often lives in the antelope's large nose. The scientists believe irregularly warm weather made the microbe more dangerous and triggered fatal blood poisoning. The saiga also face a loss of habitat and dangers poachers, who kill them for their horn, which is believed to have medicinal properties. And conservationists feared the disease would spell the end for the animals. But a visit back to the grassy steppe where they graze found the population has made an astonishing recovery. Project goal: Protecting Kazakhstan's saiga population following the 2015 mass death Project size: The conservation area is around the size of France Project partner: Frankfurt Zoological Society, Kazakh authorities A film by Jürgen Schneider and Inga Sieg