Fast Company: “The delta variant of the COVID-19 coronavirus has public health officials the world over very worried. That variant, first seen in India and known by its identifier B1617, has now spread to more than 80 countries around the globe and is quickly becoming the dominant strain in the countries it has reached. The reason the delta variant is so worrisome is that it’s both more transmissible than the original and alpha strains of COVID-19 as well as appearing to be somewhat more resistant to all current COVID-19 vaccines on the market. Public health officials in America are particularly worried about the delta variant as it is expected to become the dominant strain in the U.S. by mid-July and is seen as the “greatest threat” to eliminating the virus in the country, reports NBC News. For those concerned about delta’s spread in the U.S., the CDC has an interactive tracker and map showing the variant’s current reach. In the two weeks ending May 22, delta made up just 2.8% of all cases in the U.S. But by the two weeks ending June 5, its share jumped to 9.5%. And by the two weeks ending June 19, it’s estimated that delta accounted for 20.6% of all cases…”