President Trump’s executive order allowing meatpacking plants to continue operating through the coronavirus pandemic is stirring concerns among local officials, wary of new spikes in infection rates if closed plants rush to reopen.

Since the beginning of the month, meat giants including Tyson Foods Inc., Smithfield Foods Inc., JBS USA Holdings Inc. and Cargill Inc. have closed more than a dozen major U.S. pork, beef and chicken processing plants. Those closures have plunged the food system into disarray, forcing supermarket…

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