"Vector is one of only two places in the world authorized to store live specimens of the smallpox virus — the other is the US Centers for Disease Control and Prevention in Atlanta. Vector, founded in 1974, is one of the biggest virus and bioresearch labs in Russia. It was previously used for Soviet bioweapons research, RFE/RL reported. It's now used to develop vaccines for infectious diseases including swine flu, HIV, and Ebola, Tass said." https://www.insider.com/russia-virus-lab-anthrax-smallpox-ebola-gas-explosion-fire-2019-9
Russia says no biohazardous material got out....though they lied about Chernobyl among other things already