For a world crippled by the coronavirus, salvation hinges on a vaccine. But in the United States, where at least 4.6 million people have been infected and nearly 155,000 have died, the promise of that vaccine is hampered by a vexing epidemic that long preceded Covid-19: obesity.
For a world crippled by the coronavirus, salvation hinges on a vaccine. But in the United States, where at least 4.6...
