The “before times” seem like a decade ago, don’t they? Those carefree days when hugging friends and shaking hands wasn’t verboten, when we didn’t have to reach for a mask before leaving our homes, or forage for supplies of hand sanitizer. Oh, for the days when social distancing wasn’t part of our vernacular.
In reality, though, it’s only been about seven months since the world learned a new and dangerous coronavirus was in our midst. In the time since Chinese scientists confirmed the rapidly spreading disease in Wuhan was caused by a new coronavirus and posted its genetic sequence on line, an extraordinary amount has been learned about the virus, SARS-CoV-2, the disease it causes, Covid-19, and how they affect us.
Here are some of the things we have learned, and some of the pressing questions we still need answered.