Is your sniffle a sign of COVID-19, a common cold, the flu, or something else? It's getting increasingly hard to tell, as Katherine J. Wu writes for the Atlantic—and not just because many viruses are circulating at once. As it evolves, the virus behind COVID-19 is causing more respiratory symptoms than it once did. But, as Wu writes, it's still too soon to say that COVID-19 is no more worrisome than a common cold. |