Grand Canyon’s explosive gastroenteritis was a 3-month, multisource outbreak

Enlarge / The Grand Canyon viewed from the South Rim adjacent to the El Tovar Hotel on November 11, 2019, in Grand Canyon National Park, Arizona. Getty | George Rose

The explosive outbreak of gastroenteritis that erupted in the Grand Canyon earlier this year was likely sparked by multiple people hauling in norovirus infections, according to a recent study published by the Centers for Disease Control and Prevention in its Morbidity and Mortality Weekly Report. The infectious blast ended up violently hollowing out at least 222 visitors to the geologic marvel over a brisk, but brutal three-month period

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