Does it really take an expensive brain scan to diagnose Alzheimer’s? Not everybody needs one but new research suggests that for a surprising number of patients whose memory problems are hard to pin down, PET scans may lead to changes in treatment. The findings, reported Wednesday, mark a first peek at a huge study under…
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US Enrolls Volunteers in Large Test of Possible Zika Vaccine
U.S. health officials have begun enrolling volunteers for critical next-stage testing of an experimental vaccine to protect against Zika, the mosquito-borne virus that can cause devastating birth defects in pregnant women. The first volunteer was vaccinated Wednesday at Baylor College of Medicine in Houston, as the National Institutes of Health gears up for a two-part…