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By Marilynn Marchione The Associated Press

New gene tests for germs quickly reveal source of infections

Brian Jetter was on life support, a healthy 40-year-old suddenly battling pneumonia and sepsis, and a slew of tests had failed to find the cause.

Mystery illnesses like this kill thousands of people each year when germs can’t be identified fast enough to reveal the right treatment. Now genetic tests are helping to solve these cases.

Brain scans may reveal concussion damage in living athletes

Researchers may be closing in on a way to check athletes while they’re alive for signs of a degenerative brain disease that’s been linked to frequent head blows. Experimental scans found higher levels of an abnormal protein tied to the disease in a study of former National Football League players who were having mood and thinking problems.