Today the ongoing discontent of the criminal organization known as the United States Government over China's refusal to share samples H7N9 strain flu viruses frothed up in pantsuit publications (archived). H7N9 is an avian flu strain seen in 2013, and as with other avain strains there have been some number of homo sapiens that have fallen ill from the virus.
China's reluctance to share is understandable considering that shortly after the September 11, 2001 terrorist attacks in the United States a weaponized strain of anthrax cultivated by the United States Government was deployed in a manner that intentionally incited further terror within the United States itself. Trusting that same criminal organization which either negligently or complicitly allowed its bioweapons to be deployed in anger on its own soil with a potentially much more virulent pathogen would be simply irresponsible.