I've been looking at both UK & Filipino media throughout the day and I can't find any mention of this yet (other than the excellent Manila Times columnist, Rigoberto Tiglao, retweeting it on his personal X account). Whatever you may believe about Covid vaccines, this is - typically - despicable.

"The U.S. military launched a clandestine program amid the COVID crisis to discredit China’s Sinovac inoculation – payback for Beijing’s efforts to blame Washington for the pandemic. One target: the Filipino public. Health experts say the gambit was indefensible and put innocent lives at risk."

https://www.reuters.com/investigates/special-report/usa-covid-propaganda/