As scientists race to develop a COVID-19 vaccine, experts say obesity could prove an impediment — a sobering prospect for a nation in which nearly half of all adults are obese. (Lynne Shallcross/KHN illustration; Getty Images)

America’s Obesity Epidemic Threatens Effectiveness of Any COVID Vaccine

by Sarah Varney, Kaiser Health News For a world crippled by the coronavirus, salvation hinges on a vaccine. But in

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