COVID cases are on the rise again in many countries. And this time, the SARS-CoV-2 virus has company. In the United States, Europe and Asia, the flu virus and a third dangerous pathogen—the respiratory syncytial virus—are surging at the same time as the novel-coronavirus.
It’s a “tripledemic,” to use an admittedly non-scientific term. And it’s a harbinger of our pathogenic future. As we chop down more forests, releasing...