Maatje Benassi, a US Army reservist and mother of two, has become the target of conspiracy theorists who falsely place her at the beginning of the coronavirus pandemic, saying she brought the disease to China. The false claims are spreading across YouTube every day, so far racking up hundreds of thousands of apparent views, and have been embraced by Chinese Communist Party media. Despite never having tested positive for the coronavirus or experienced symptoms, Benassi and her husband are now subjects of discussion on Chinese social media about the outbreak, including among accounts that are known drivers of large-scale coordinated...