As the Delta variant rapidly spreads, US hotspots have seen climbing cases — and an expert warns a “surprising amount” of Covid-19 deaths could soon follow. The US is averaging about 19,455 new cases over the last seven days, a 47% increase from the week prior, according to data from Johns Hopkins University. And a third of those, CNN Medical Analyst Dr. Jonathan Reiner said, come from five hotspots: Florida, Louisiana, Arkansas, Missouri and Nevada. -snip- “We will start to see an increase in mortality in this country,” Reiner said. What is particularly frustrating for many experts, Reiner said, is...