Novosibirsk State Research Centre of Virology and

Centre is one of only two repositories in the world of smallpox virus, and a key hub of research into the planet's deadliest diseases.

Strains of the deadly disease remain at the high security Vector Research Centre.

Scientists warn over 'rapid rate' of spread now accounting for 50% of new infections in Novosibirsk.

Special testing kits sent to Sochi amid 'fears from Japan' and other countries over risk from deliberate deadly disease strike.

Found in a frozen prehistoric squirrel's nest, scientists make intriguing discovery.

Spaso-Zashiverskaya has survived wars, permafrost, and a smallpox outbreak that wiped out its congregation.

Specialists from world famous Vector Institute in Novosibirsk region are conducting preclinical tests.

Virologist Dr Vladimir Blinov fears comeback of flu strain which cost two million lives in 1957.

Vector Research Centre to test several vaccine variants to counter deadly virus.

The pair returned from Nigeria, one of the countries stricken with the deadly virus.