How the pandemic changed the world of disease control for worse — and for better from NPR Gabrielle Emanuel

Wastewater sampling plays an increasing role in identifying disease outbreaks. Above: Inspectors in Oakland, Calif., collect samples to send to labs that will try to detect the SARS-CoV-2 virus.

Five years after the World Health Organization declared a global pandemic, there has been progress — and backsliding in the way the world responds to infectious disease.

(Image credit: Paul Chinn/The San Francisco Chronicle via Getty Images)

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