Medical workers stretch a patient from an Italian Red Cross ambulance into an intensive care unit set up in a sports center outside the San Raffaele hospital in Milan, on March 23, 2020 during the COVID-19 new coronavirus pandemic.
Miguel Medina | AFP | Getty Images
Three months after the coronavirus emerged in China, it has quickly spread to nearly half a million people across the globe, killing more than 22,000 people and bringing the world economy to a near-grinding halt.
Some scientists estimate that millions will ultimately die before COVID-19 runs its course. There’s a lot that infectious disease specialists and scientists still don’t know about the virus. Exactly how deadly and…