From Fox News:
A virus research center in Russia — one of two places in the world that houses the smallpox virus — exploded on Monday, officials said.
The blast at the State Research Center of Virology and Biotechnology, or “Vector,” left one employee injured and the building, located in Koltsovo, near the Siberian city of Novosibirsk, survived without structural damage, according to a statement from the facility. The suspected gas explosion happened on the fifth floor of the 6-floor concrete building during scheduled repairs, Russian-owned news agency TASS reported.