Graphics: How delays in U.S. response influenced COVID-19 spread

The number of confirmed cases of COVID-19 in the United States climbed above 30,000 on Sunday. The dramatic increase indicates how much the virus has spread throughout the country, but also stems from more availability of test kits after weeks of delay.

Like other countries that were hit late but are now overwhelmed with cases, such as Italy and Iran, the U.S.' failure to control the virus, in part, is the result of limited testing capacity.

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