Speaking as an armchair expert on biological warfare, there has been a unified and persistent policy of downplaying laboratory leaks from any facility with even the faintest military connections since the cessation of hostilities in WWI. Gruinard Island, Sverdlovsk, Vozrozdeniya Island, Reston, fuckin' Rajneesh - it's always "no, no, total coincidence, they were killed by a wet market, nature is scary" until 20 years later when somebody cops to it and then the NYT does a think piece entitled Why We Were Wrong 20 Years Ago But Still Superior To You. Biological incidents that are not accidental leaks invariably have their conspiracies trounced within months. Incidents that are remain conspiracy bait until someone writes a memoir entitled "how I almost killed a million people by Shady Researcher Ph.D."