1. The Scene and the Pledge The ballroom was warm, buzzing with a strange mix of hope, anger, and resolve. Rows of attendees—some in jeans and wellness-branded T-shirts, others in business casual—leaned forward as Robert F. Kennedy Jr. took the stage at the latest “Make America Healthy Again” (MAHA) conference. The applause was immediate and loud, not the polite clapping of a bureaucratic gathering, but the fervent ovation of a movement that believes it has been ignored for too long. Kennedy, who has become a lightning rod in the national debate over vaccines, looked out at the crowd with the…

It starts with a public health alert—a rare virus, a cluster of cases, an official warning to be careful. But soon enough, the warning is no longer just about the disease. It is about something else: the stories blooming around it, the whispers, the memes, and the confident voices online telling people not to believe what they hear. That is exactly what happened recently when health officials raised concerns about hantavirus, a serious and sometimes deadly illness spread by rodents. Almost as quickly as the news broke, familiar falsehoods began to circulate. Some claimed the outbreak was a hoax, a…