641233 external_news 1605122236 1605122236 “We highlight the fact that these sort of regional-level risks have shifted,” says Georgia Institute of Technology quantitative biologist Joshua Weitz, coauthor of a new paper in Nature Human Behaviour describing the map system. “In late summer it was in the South, Southeast. And late spring and early summer, the Northeast. So there's definitely been regional shifts. And right now, the strongest and most worrisome rates of spread are in the Midwest plains and upper mountain region.”

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