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LOS ANGELES, March 7 (Xinhua) -- U.S. food producer Unilever said on Monday it is recalling two varieties of its Skippy peanut butter because some jars may be contaminated with salmonella.The recall affects jars distributed to retailers in 16 states -- Arkansas, Connecticut, Delaware, Illinois, Iowa, Maine, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Dakota, Pennsylvania, Virginia and Wisconsin, the company said.But the company said no illnesses have been linked to the contaminated Skippy peanut butter.The 16.3-ounce jars are marked with UPC codes 048001006812 and 048001006782 and have Best-If-Used-By Dates of MAY1612LR1, MAY1712LR1, MAY1812LR1, MAY1912LR1, MAY2012LR1 and MAY2112LR1.Unilever advised consumers in a press release to throw away any jars of the recalled peanut butter and to contact the company for a replacement coupon.Salmonella is an organism which can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened immune systems. The most common symptoms are diarrhea, abdominal cramps and fever within eight hours to 72 hours of eating a contaminated product.About 40,000 cases of salmonella are reported each year in the United States, according to the Centers for Disease Control and Prevention.

LOS ANGELES, April 12 (Xinhua) -- With the help of NASA Telescopes, astronomers have uncovered one of the youngest galaxies in the distant universe, with stars that formed 13.5 billion years ago, the Jet Propulsion Laboratory (JPL) announced on Tuesday.The finding addresses questions about when the first galaxies arose, and how the early universe evolved, JPL noted in a press release.Infrared data from both the Hubble Space Telescope and the post- coolant, or "warm," phase of NASA's Spitzer Space Telescope mission revealed that the galaxy's stars are quite mature, which means they must have formed when the universe was just a toddler, said JPL in Pasadena, Los Angeles.This challenges theories of how soon galaxies formed in the first years of the universe and could even help solve the mystery of how the hydrogen fog that filled the early universe was cleared, according to astronomers involved in the study.This galaxy is not the most distant ever observed, but it is one of the youngest to be observed with such clarity, JPL said.Normally, galaxies like this one are extremely faint and difficult to study, but, in this case, nature has provided the astronomers with a cosmic magnifying glass, JPL said.The galaxy's image is being magnified by the gravity of a massive cluster of galaxies parked in front of it, making it appear 11 times brighter. This phenomenon is called gravitational lensing."Without this big lens in space, we could not study galaxies this faint with currently available observing facilities," said Eiichi Egami of the University of Arizona in Tucson. "Thanks to nature, we have this great opportunity to see our universe as it was eons ago."The findings may help explain how the early universe became " reionized," according to JPL."Seeing a galaxy as it appeared near the beginning of the universe is an awe-inspiring feat enabled by innovative technology and the fortuitous effect of gravitational lensing," Jon Morse, NASA's Astrophysics Division director at the agency's headquarters in Washington, said in the release."Observations like this open a window across space and time, but more importantly, they inspire future work to one day peer at the stars that lit up the universe following the big bang."

BEIJING, Feb. 12 (Xinhua) -- The Chinese government has reiterated a strict ban on hepatitis B tests during pre-employment physical examinations as many companies reportedly violated rules to require hepatitis B tests for job applicants.In a statement released Saturday, the Ministry of Health said that no health institutions are allowed to provide hepatitis B checks as part of pre-employment physical tests regardless of whether the examinees provide consent or not.On Feb. 10, 2010, the Ministry of Health, the Ministry of Education and the Ministry of Human Resources and Social Security jointly issued a circular demanding the cancellation of the hepatitis B tests during the health checks for school enrollment and employment nationwide.However, according to a survey released this week, which was conducted by the non-profit Beijing Yirenping Center, some 61.1 percent of the 180 state-run companies surveyed included hepatitis B checks in their pre-employment physical examinations.More surprisingly, 63 companies said that they would never consider hepatitis B carriers for a job or were reluctant to hire such people.Yu Fangqiang, the principal of the Yirenping Center, said that such violations mainly resulted from light punishment for violations and some health institutions' desire for profits.According to the survey, employers would only be fined between thousands to tens of thousands of yuan if they lose their lawsuits for bias against hepatitis B carriers.Meanwhile, a worker will spend a lot of time, energy and money to file a lawsuit and collect evidence in order to win.Liu Xiaonan, an associate professor with the China University of Political Science and Law, called on the government to hammer out a particular law and set up a special committee to investigate discrimination cases in order to ensure the rights of workers.In the statement released Saturday, the health ministry also ordered a careful investigation of all cases of hepatitis B discrimination, and promised that violators would be exposed and punished in accordance with laws and regulations.Medical tests show that hepatitis B virus can only be transmitted from mother to child during childbirth or by contact with the blood or other body fluids of an infected person.

LOS ANGELES, March 3 (Xinhua) -- More and more American adults are suffering from a decline in overall sleep duration, the U.S. Centers for Disease Control and Prevention (CDC) said on Thursday.It's recommended that adults should sleep seven to nine hours a night to maintain good health, but more than one-third of Americans do not meet that requirement, according to the CDC.Insufficient sleep poses a long-term heath threat and impairs work performance and the ability to drive safely, the CDC said.Chronic sleep loss also is associated with obesity, increased risk of death and other health problems, according to the CDC."Over the last 20 years there has been a decline in overall sleep duration in adults," said Lela McKnight-Eily, a clinical psychologist and epidemiologist at the CDC's National Center for Chronic Disease Prevention."Within our culture there seems to be a belief that sleep isn't a part of overall essential health," she said.McKnight-Eily and her colleagues studied the sleep habits of 74,571 adults in 12 states, 35.3 percent reported sleeping less than seven hours.In addition, 48 percent reported snoring, 37.9 percent said they fell asleep at least once during the day the previous month and 4.7 percent admitted to falling asleep at the wheel at least once.Drowsiness or nodding off while driving accounts for 1,550 deaths and 40,000 injuries a year, according to the U.S. Department of Transportation.To get enough sleep, Americans have to change lifestyle habits, including longer workdays and late nights on the computer, McKnight-Eily said, noting that too much screen time paring away much-needed sleep time.