Delta Vanquishes All Variant Rivals

Washington Post: “The coronavirus pandemic in America has become a delta pandemic. By the end of July, it accounted for 93.4 percent of new infections, according to the Centers for Disease Control and Prevention. The speed with which it dominated the pandemic has left scientists nervous about what the virus will do next. The variant battles of 2021 are part of a longer war, one that is far from over.”

“Epidemiologists had hoped getting 70 or 80 percent of the population vaccinated, in combination with immunity from natural infections, would bring the virus under control. But a more contagious virus means the vaccination target has to be much higher, perhaps in the range of 90 percent. Globally, that could take years.”