In all, 10 people died from heat-related illnesses within the city limits of Laredo between June 15 and July 3, a toll unheard of in this heat-accustomed corner of Texas. Across the country, extreme heat, which can strain the heart, lungs and kidneys, is a leading weather-related cause of death. In Texas last year, 298 people died of heat-related causes, according to the state health department — the highest annual total in more than two decades. During the heat wave in Webb County, at least two migrants were found dead on local ranches, according to the sheriff, Martin Cuellar. And the temperature readings tell only part of the story, public health officials cautioned, because humid air worsens the heat, making it much more difficult for the body to cool down.

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Persons: Martin Cuellar, Alicia Van Doren, “ We’re, ” Locations: Laredo, Texas, Webb County, California, Florida, In Louisiana, Virginia, Louisiana