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U.K. researchers released what they called “groundbreaking” news Tuesday regarding dexamethasone, a low-cost steroid they claim may prevent one in eight deaths of ventilated patients with COVID-19. In the midst of a pandemic that has infected more than 8 million people worldwide, it’s undoubtedly encouraging news. But in the wake of premature endorsements of hydroxychloroquine and other treatments, experts are urging both doctors and the public to proceed with caution.

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