How did jena die in the balto story and in real life?

In the "Balto" story, Jena, a character inspired by the real-life events surrounding the 1925 serum run to Nome, is depicted as a sled dog who dies during the perilous journey to deliver diphtheria antitoxin. In real life, the actual sled dog teams faced extreme weather and challenging conditions, leading to the deaths of some dogs, though no specific dog named Jena existed. The focus in both narratives is on the heroism of the sled teams and their contributions to saving lives during a critical epidemic, rather than on individual dog fates.