WASHINGTON - The government said Thursday that the salmonella outbreak that sickened at least 1,440 people appears to be over, but its ultimate source may never be known, partly because of shortcomings in the nation's food safety system.

ATLANTA - Government scientists struggled Thursday to pinpoint the source of the first U.S. salmonella outbreak linked to peanut butter, the kid favorite packed into millions of lunchboxes every day.

ATLANTA — All baby boomers should get a one-time blood test to learn if they have the liver-destroying hepatitis C virus, U.S. health officials said Thursday.

ATLANTA  — Half of U.S. adults under 30 say they have had a sunburn at least once in the past year, a government survey found — a sign young people aren't heeding the warnings about skin cancer.

Should Arizona face a public health emergency, the state is ready, according to a new report from the Centers for Disease Control and Prevention (CDC) on Public Health Preparedness.

More than 85,000 adult men in Arizona quit tobacco last year, according to the state Department of Health Services. They represent the lowest overall rate of cancer in the country, including prostate cancer.

Teenagers should get vaccinated to protect against the bacteria that causes meningococcal meningitis, the Centers for Disease Control and Prevention recommends in a report published Thursday.

WASHINGTON — A top-ranking official of the Centers for Disease Control and Prevention says production of a vaccine for swine flu virus is behind schedule and people should take precautionary steps to prevent its spread.

ALBUQUERQUE, N.M. - Salmonella food poisoning first linked to uncooked tomatoes has spread to 16 states, federal health officials said Saturday.

ATLANTA - When ticks caused an outbreak of Rocky Mountain spotted fever at an American Indian reservation in Arizona, the nation’s premier health agency called the Orkin Man.

If a stranger knocks on your door in the next few weeks, it could be an invitation to help shape federal health policy.

If a stranger knocks on your door in the next few weeks, it could be an invitation to help shape federal health policy.

ATLANTA - Federal scientists say they will consider requests to ship the recently recreated 1918 killer flu virus to select U.S. research labs.

Arizona was included added Thursday on to a list of 24 states classified as having a "widespread" influenza outbreak by the federal Centers for Disease Control and Prevention.

Eighty-six percent of Arizona men say their general health is good, very good or excellent, according to the 2009 Behavioral Risk Factor Survey, contradicting a ranking by the Centers for Disease Control (CDC) Survey, which lists Arizona 30th in men's health nationally.

CHAMPAIGN, Ill. — As they scrambled recently to trace the source of a salmonella outbreak that has sickened hundreds around the country, investigators from the Centers for Disease Control and Prevention successfully used a new tool for the first time - the shopper cards that millions of Americans swipe every time they buy groceries.

 ATLANTA  — Let us give thanks — and pass the Purell.

ATLANTA — U.S. life expectancy has risen to a new high, now standing at nearly 78 years, the government reported Wednesday.

The Centers for Disease Control and Prevention confirmed five cases of the H1N1 virus, also known as swine flu, in Pinal County on Tuesday. All five individuals reside in Pinal County or on tribal land within county borders.