America’s Obesity Epidemic Threatens Effectiveness of Any COVID Vaccine | Kaiser Health News

America’s Obesity Epidemic Threatens Effectiveness of Any COVID Vaccine | Kaiser Health News: Vaccines engineered to protect the public from influenza, hepatitis B, tetanus and rabies are less effective for obese people, leaving them more vulnerable to serious illness. 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.