Internet searches on gastrointestinal symptoms predicted a rise in Covid-19 cases
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Researchers at Massachusetts General Hospital found that Internet searches on gastrointestinal symptoms predicted a rise in Covid-19 cases weeks later, demonstrating a novel early warning system for hot spots of the pandemic disease. Using Google Trends online tool, they found the volume of searches correlated most strongly with cases in New York, New Jersey, California, Massachusetts and Illinois, states with high disease burden.