Reuters: At the height of the COVID-19 pandemic, the U.S. military launched a secret campaign to counter what it perceived as China’s growing influence in the Philippines, a nation hit especially hard by the deadly virus. The clandestine operation has not been previously reported. It aimed to sow doubt about the safety and efficacy of vaccines and other life-saving aid that was being supplied by China, a Reuters investigation found.

In uncovering the secret U.S. military operation, Reuters interviewed more than two dozen current and former U.S officials, military contractors, social media analysts and academic researchers. Reporters also reviewed Facebook, X and Instagram posts, technical data and documents about a set of fake social media accounts used by the U.S. military. Some were active for more than five years.