Those coronavirus vaccines leading the race? Don`t ditch the masks quite yet
(WorldNews Business)

By Thomas Curwen Nearly $6 billion has been allocated. Clinical trials are entering a crucial third phase, and Operation Warp Speed is getting closer to the goal of delivering 300 million doses of a COVID-19 vaccine by January. But when Americans line up for their immunizations, the vaccine they receive might not be what they expect. The popular notion of a vaccine _ a shot in the arm that prevents diseases such as measles, polio or shingles for years or a lifetime _ may not apply. Under recently released federal guidelines, a COVID-19 vaccine can be authorized for use if it is safe and proves effective in as few as 50% of those who receive it. And “effective” doesn’t...