Facebook maps coronavirus based on people reporting their symptoms: Here’s how Southern California is doing

LOS ANGELES — Facebook released the first maps of people reporting symptoms of COVID-19 on Monday, offering county-by-county data to help track the spread of the virus.
“Understanding how COVID-19 is spreading is critical for local governments and public health officials as they allocate scarce resources like ventilators and PPE, and eventually to decide when it is safe to start re-opening different places,” Facebook CEO Mark Zuckerberg wrote in a post. “Researchers belie