MADRID, Spain (AP) -- Spain has recorded its first case of H5N1 bird flu, the Agriculture Ministry said Friday.

The strain was found in a wild bird in a marsh area outside the northern city of Vitoria, the ministry said in a statement.

The version of the H5N1 strain found in this case is highly virulent, it added.

A protective area of 3 kilometers (2 miles) has been declared outside the area where the bird -- known as a great crested grebe -- was found, the statement added.

Spanish officials said late last year as bird flu spread to several European countries that it was only a matter of time before the disease made it to this country, which is on the route of northern-bound migratory birds from Africa.

Preventive measures taken so far had included banning outdoor poultry farming within a 10-kilometer (6.25-mile) radius of certain marshlands, where migratory birds tend to gather.

Bird flu has killed at least 131 people worldwide since it started ravaging Asian poultry in late 2003, according to the World Health Organization.

Most human cases have been linked to contact with infected birds, but experts fear the virus could mutate into a form that makes it more easily transmissible among humans.

Study suggests liver risk from Tylenol

CHICAGO, Illinois (AP) -- Healthy adults taking maximum doses of Tylenol for two weeks had abnormal liver test results in a small study, researchers found, raising concerns that even recommended amounts of the popular painkiller might lead to liver damage.

A matter of taste: We study labels, still go for flavor

WASHINGTON (AP) -- Oh, the irony. A nation full of overweight people is also full of label readers. Nearly 80 percent of Americans insist they check the labels on food at the grocery store.

Smoking rate among high schoolers remains constant

ATLANTA, Georgia (CNN) -- Nearly one in four high school students were smokers last year, a rate that has not budged in several years, the Centers for Disease Control and Prevention said Thursday.

Mediterranean beats low-fat diet for heart health

NEW YORK (Reuters) -- Mediterranean-style diets, rich in healthy fats from olive oil or nuts, may be better for the heart than low-fat regimens, a new study shows.

New drug useful for smoking cessation

NEW YORK (Reuters) -- Treatment with a new drug called Chantix may be more effective than Zyban in helping smokers kick the habit, and it may also promote longer-lasting abstinence, suggest results of three studies in the Journal of the American Medical Association this week.