Why is the U.S. still struggling to test everyone who needs it?

Since the earliest days of the coronavirus pandemic, public health experts have emphasized that having an efficient system for wide-scale testing was key to bringing the COVID-19 outbreak under control. But in reality, virus testing in the United States has consistently missed the mark. William Brangham talks to Dr. Jennifer Nuzzo, an epidemiologist at Johns Hopkins Center for Health Security.

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Видео Why is the U.S. still struggling to test everyone who needs it? канала PBS NewsHour