Six months into a pandemic that has killed over half a million people, more than 200 scientists from around the world are challenging the official view of how the coronavirus spreads.

Richard Read

,

LA Times•

The World Health Organization and the U.S. Centers for Disease Control and Prevention maintain that you have to worry about only two types of transmission: inhaling respiratory droplets from an infected person in your immediate vicinity or — less common — touching a contaminated surface and then your eyes, nose or mouth.

But other experts contend that the guidance ignores growing evidence that a third pathway also plays a significant role in…