NORTH TEXAS (CBSNEWS.COM) – An eye-opening study from the Centers for Disease Control and Prevention said coronavirus cases are a lot higher than the numbers reported in some parts of the country — up to 13 times higher — because so many who were infected didn’t know it and unwittingly spread the virus. Now, we’re seeing the results of this undetected spread.

A respiratory therapist looks through patient information in the ICU at a hospital in Texas. (credit: Mark Felix/AFP via Getty Images)

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Confirmed cases in the U.S. are edging toward 4 million. The virus has killed more than 141,000 Americans. Texas recorded a thousand deaths in just 10 days. That’s as many deaths as in the prior three months.

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While cities like Dallas and Houston are now seeing a decrease in positive cases and hospitalizations, virus-related deaths in the state are up 33% over the last 10 days.

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