Germany traced its earliest community transmission of COVID-19 back to a salt shaker in a company canteen. The country's methodical search for transmission chains has so far resulted in some of the lowest death rates in Europe. But experts say more deaths in Germany are inevitable. One January lunchtime in a car parts company, a worker turned to a colleague and asked to borrow the salt. As well as the saltshaker, in that instant, they shared the new coronavirus, scientists have since concluded. That their exchange was documented at all is the result of intense scrutiny, part of a rare...