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ATLANTA, Dec. 18 (UPI) -- Eleven states report widespread influenza activity, down from 14 states a week earlier, U.S. health officials said Friday.

DURHAM, N.C., Dec. 18 (UPI) -- A study tracking 3,000 orphans in five Asian and African countries has found those in orphanages do as well as those in community settings.

MADISON, N.J., Dec. 18 (UPI) -- H1N1 flu is on the decline, but close to 4-in-10 U.S. children tested positive last week for the pandemic, officials of a laboratory testing company say.

EDMONTON, Alberta, Dec. 18 (UPI) -- University of Alberta psychologists say emotionally mature college students may get more positive benefits from sex than their less-mature counterparts.

ANN ARBOR, Mich., Dec. 18 (UPI) -- U.S. researchers suggest celecoxib or Celebrex may keep low-dose aspirin from limiting blood clots.

ATLANTA, Dec. 18 (UPI) -- Health officials say they have no single explanation for why autism is up by half among American children.

EDE, Netherlands, Dec. 18 (UPI) -- A new weapon in the war on obesity may be the satiating effect of food aromas, Dutch researchers suggest.

NEW YORK, Dec. 18 (UPI) -- Eighty-eight percent of U.S. adults ages 19-29 say it is important for Congress to pass healthcare reform legislation, a survey indicates.

SAN DIEGO, Dec. 18 (UPI) -- Female facial beauty may be a matter of cognitive averaging, U.S. and Canadian researchers say.

LOS ANGELES, Dec. 18 (UPI) -- Transmission of H1N1 among passengers during a trans-Atlantic airline flight could be fairly high, U.S. researchers said.

BETHESDA, Md., Dec. 18 (UPI) -- Deficiencies in omega-3 fatty acids may be a factor in mental illnesses, U.S. researchers suggest.

NEW YORK, Dec. 18 (UPI) -- New York officials say they are considering requiring city restaurants to post their grades of A, B or C based on their most recent sanitary inspection grade.

ROCHESTER, N.Y., Dec. 18 (UPI) -- Avid video game players get faster not only on their game of choice, but on a variety of unrelated laboratory tests of reaction time, U.S. researchers say.

UPPSALA, Sweden, Dec. 17 (UPI) -- A group of drugs used to treat heart failure shows promise for fighting colon cancer, researchers in Sweden said.

ATLANTA, Dec. 17 (UPI) -- Two state health departments identified a life-threatening condition that compromises the immune system among persons using cocaine, U.S. officials said.

PARIS, Dec. 17 (UPI) -- Beaches may be a reservoir of the pathogen E.coli as a result of migratory bird droppings, researchers in France and Portugal say.

MINNEAPOLIS, Mich., Dec. 17 (UPI) -- U.S. and Belgian industrial psychologists say personality tests can predict the success of medical school applicants.

LONDON, Dec. 17 (UPI) -- There is a type of "war of the roses" being waged in some British hospitals, with some staff determined to rid patients' rooms of flowers, researchers say.

NEW YORK, Dec. 17 (UPI) -- Tap water may be legally safe but in reality could pose serious health risks because the 35-year-old federal law regulating it is out of date, scientists say.

SKOKIE, Ill., Dec. 15 (UPI) -- Sometimes it's hard to tell whether you're tackling parenthood in the 21st century -- or being tackled by it. This is the latest in a series of reflections by UPI writers.