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.
Officials in states across the South are warning that more young people are testing positive for coronavirus. The shifts in demographics have been recorded in parts of Florida, South Carolina, Georgia, Texas and other states — many of which were some of the first to reopen.
A third of Covid-19 patients are asymptomatic and 0.4% of those who get sick will die, CDC says. The agency cautions that those numbers are subject to change as more is learned about Covid-19, and it warns that the information is intended for planning purposes.
"This is exciting news about the value of masking to prevent Covid-19," said Clay Goddard, the county's director of health. "We are studying more closely the details of these exposures, including what types of face coverings were worn and what other precautions were taken to lead to this encouraging result."
Physicians and other medical professionals use pulse oximeters on patients experiencing shortness of breath or those who have a lung or heart conditions to determine if they're getting enough oxygen. Health care professionals routinely use them in hospitals and clinics when checking vital signs.