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An epidemic of dengue fever in the Caribbean and Latin America has increased the risk of an outbreak of the sometimes deadly mosquito-borne virus in South Florida, a bioclimatologist and dengue expert said on Tuesday.
Leading mental health experts gave a briefing on Tuesday to warn that a new edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM), which is being revised now for publication in 2013, could devalue the seriousness of mental illness and label almost everyone as having some kind of disorder.

Citing examples of new additions like "mild anxiety depression," "psychosis risk synd
Pap smears in women under 21 do more harm than good, new guidelines from the American College of Obstetricians and Gynecologists (ACOG) say.
Even if they aren't staffed to handle emergency cesarean sections, hospitals should respect a woman's informed choice to have a vaginal birth after cesarean (VBAC), new guidelines say.
Most people who have a common knee ligament injury fare just as well with intense physical therapy as they do with surgery, according to a study comparing the two techniques released on Wednesday.

Researchers said that focusing on rehabilitation first could prevent more than half of operations done to repair a tear in the anterior cruciate ligament
Lewis Ziska, plant physiologist for the U.S. Department of Agriculture's agricultural research service, says rising carbon dioxide levels and forest disruption are making poison ivy spread faster, grow larger, show up in new places and become more toxic. He tells host Michele Norris what makes the plant uniquely affected and how to treat skin that's been exposed.
In The Fever: How Malaria Has Ruled Humankind for 500,000 Years, journalist Sonia Shah weaves together a social history of the disease, which has plagued humans for thousands of years and shows no sign of slowing down, despite being treatable with drugs.

In an interview on Fresh Air,...
Shrimp exposed to traces of Prozac swim in brighter areas, making them more vulnerable to predators, a new study says.
"We focused on shrimp because they are common and important in the food chain, but serotonin is also linked to behavioral changes in other species, including fish," ...
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