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New deadly flu launched by live bird markets
August 21st, 2013
05:01 PM ET

New deadly flu launched by live bird markets

The new strain of bird flu that killed at least 40 people in China this year likely evolved through close contact between ducks and chickens in markets selling live birds, according to a genetic analysis published in the journal Nature. At least 130 people became infected during the outbreak, which began in March.

“We clearly identified that the source of human infection came from the infected chickens, not any other types of birds,” said Yi Guan, a professor of virology at the University of Hong Kong and one of the study authors. The analysis also shows the virus was shed from the birds' oral or upper respiratory tract, not from fecal material. According to Yi, this suggests that H7N9 reasonably well adapted to infect humans, a finding that's supported by other research.

The research group also discovered a previously unrecognized variety of bird flu – an H7N7 strain, with a genetic makeup similar to the novel H7N9 strain. The H7N7 strain was also able to infect mammals in laboratory conditions.

Any variety of influenza is broadly characterized by two of its proteins: the type of hemaglutinin (“H”) and the type of neuraminidase (“N”).
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Antipsychotics linked to diabetes in kids
August 21st, 2013
04:00 PM ET

Antipsychotics linked to diabetes in kids

Antipsychotics have already been linked to type II diabetes in adults. Now a new study shows a connection between these medications and the chronic medical condition in kids as well.

Researchers report in the journal JAMA Psychiatry that children taking antipsychotics have three times the risk of developing type II diabetes, compared to children taking other psychotropic medications (drugs prescribed to treat mental disorders).

The study authors were surprised by the magnitude of the results. But the findings make sense, given that the side effects of antipsychotics include weight gain and insulin resistance, said Wayne A. Ray, study co-author and researcher in the Department of Preventive Medicine at Vanderbilt University School of Medicine. However, the study shows an association, not a cause-effect relationship.

It's not uncommon for an adult taking antipsychotic medications to gain 20 to 40 pounds in a relatively short period of time, Ray said. Similar weight gain effects have been observed in children, proportionate to their body sizes.
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Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.

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