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US surge may be slowing, officials warn of troubling Covid-19 signs across heartland
![US surge may be slowing, officials warn of troubling Covid-19 signs across heartland US surge may be slowing, officials warn of troubling Covid-19 signs across heartland](https://cnncentral.com/wp-content/uploads/2020/08/200821015325-miami-covid-testing-0805-super-169-840x480.jpg)