At least 6 are believed to have the virulent intestinal form of the disease from which one boy has already died.

The government of the Sakha republic in Siberia has allocated extra cash to slaughtering wolves threatening remote reindeer villages.

Four children among those in intensive care, as locals undergo mass evacuation and quarantining, while reindeer herd decimated.

Russian army biological protection troops called in amid warnings 'utmost care' needed to stop deadly infection spreading.

Grandfather Egor Tarasov's 'miraculous' survival story of 42 days alone in the tundra with polar and brown bears, and wolves.

As Western children salute Santa's Rudolph, here in the Sakha Republic the antlered animals are in peril from ravenous predators.

Boy killed 'after lethal infection 'awoke' in human graveyard due to unprecedented heat wave'.

Scientists rush to site of latest tundra eruption - which formed a crater 50 metres deep - amid fears for homes and key industrial sites.

Local reindeer herder witnessed the tundra explosion that led to birth of new hole in river.

In each case the deadly decades-old 'zombie' disease originated in contaminated soil and was awakened by hot Arctic summer weather.