A person sleeps next to empty oxygen tanks to save a spot in the queue, as the supplier refills a tank per person and attends only up to 60 people a day, in Callao, Peru. Photo: Reuters/Sebastian Castaneda
Vaccination drives hold out the promise of curbing Covid-19, but governments and businesses are increasingly accepting what epidemiologists have long warned: The pathogen will circulate for years, or even decades, leaving society to coexist with Covid-19 much as it does with other endemic diseases like flu, measles, and HIV……
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