Diseases, Conditions, Syndromes

Study hints, can't prove, survivor plasma fights COVID-19

Mayo Clinic researchers reported a strong hint that blood plasma from COVID-19 survivors helps other patients recover, but it's not proof and some experts worry if, amid clamor for the treatment, they'll ever get a clear ...

Diseases, Conditions, Syndromes

Coronavirus FAQs: Should I wear a mask? Can I get COVID-19 twice?

The global number of confirmed COVID-19 cases surpassed one million in early April, nearly doubling in a week. Instead of lifting or relaxing guidelines on physical distancing, we're seeing playgrounds cordoned off and school ...

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