Strains of the deadly disease remain at the high security Vector Research Centre.
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.
Smallpox expert Rinat Maksyutov appointed acting head of world famous institute at age of 34.
Anti-viral drug used to beat avian and swine flu.
Specialists from world famous Vector Institute in Novosibirsk region are conducting preclinical tests.
Scientists from Novosibirsk-based Vector are working in Yakutia on a paleo-virus experiment.
Vector Research Centre to test several vaccine variants to counter deadly virus.
Virologist Dr Vladimir Blinov fears comeback of flu strain which cost two million lives in 1957.
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.