So they freely admit it came from them. Thats nice of them.

Also, the CCP told it's people around the world to buy up the world's supplies of masks and medical equipment to send to mainland China. 
Revealed: China stockpiled 2 billion face masks and 25m medical items

Also, the Trump administration should have been preparing for a pandemic and should have replenished the nations stockpile of medical equipment. Both Obama and Bush before Trump were preparing for possible pandemics. 
The Government Is Failing by Doing Too Little, and Too Much Under investment in America’s public health infrastructure and governmental red tape have hindered the country’s response to the coronavirus. 
Inside America’s Two-Decade Failure to Prepare for Coronavirus Obama 
Prepared for a Potential Pandemic. Trump Gutted His Work. 
George W. Bush in 2005: 'If we wait for a pandemic to appear, it will be too late to prepare'

It didn't help that the mainstream media also treated the novel coronavirus as just a flu, that it's nothing to worry about and calling Trump racist for the travel restrictions. There were even New York politicians telling people to get outside and celebrate the Lunar New Years, despite the developing pandemic.