Health

What to know about new research on coffee and heart risks

Coffee lovers—and their doctors—have long wondered whether a jolt of java can affect the heart. New research published Wednesday finds that drinking caffeinated coffee did not significantly affect one kind of heart hiccup ...

Medical research

How human challenge trials accelerate vaccine development

Anna Durbin was in Brazil in December 2015 when the Zika virus erupted in the country's northeast. Although she'd flown to São Paulo to work on a dengue vaccine, Durbin returned to Baltimore preoccupied with Zika.

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