Public health officials and health care professionals say their advice is being undermined and their jobs are complicated by rampant misinformation on social media about the novel coronavirus. A study estimates that at least 800 people worldwide died in the first quarter of this year after following advice on social media to drink highly concentrated alcohol to kill the virus, and physicians say patients are demanding unproven treatments and accusing them of lying. Keep talking to your kids about misinformation online and how to vet and evaluate sources.