A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to know about symptoms and vaccines.

The National Disease Control and Prevention Administration warned on Friday of heightened risks of dengue fever, hand-foot-and-mouth disease, diarrhea, and other vector-borne or intestinal infectious ...

Taking certain hypertension medications before bed might offer better blood pressure outcomes than taking it in the morning, a new study suggests.

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