Up until recently, the existence and details of these bioweapons labs were public knowledge. The US embassy had previously disclosed the locations and details of these laboratories in a series of PDF files online. On February 26, 2022, the official embassy website shut down the links to all 15 bioweapon laboratories.
All the documents associated with these labs have been removed from the internet. If you click on any of the links, the PDF files are no longer available. Thankfully, these files have been archived and can still be accessed.
Hellbound and Down 