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BEIJING, Oct. 11 (Xinhuanet) -- Debates in the medical field developed on Monday as a U.S. government panel recommended that men of all ages should stop getting prostate cancer blood screenings.The United States Preventive Services examined all the evidence and found little if any reduction in deaths from routine P.S.A. screening and suggested that the test does more harm than good to healthy men.The P.S.A. test for prostate cancer, a blood test to screen for a protein that may indicate cancer, has become widely used because it can help detect tiny tumors at a very early sta ge, when they are theoretically most treatable.Unfortunately, according to the task force, the vast majority of the results are false-positives: the men don’t actually have cancer. And most of those found to have cancerous cells would not suffer ill effects because their cancer is so slow-growing that it would not cut short their lives. Those with faster-growing cancers may also not be helped if the cancer is extremely aggressive.After the recommendation came out last week, many prostate cancer specialists have been pushing back.Urologist Dr. Mark DeGuenther said this recommendation is more about saving money than saving lives. He said death rates from prostate cancer have dropped 40 percent since men began getting screened at age 40 and he says it will save taxpayers and patients more money in the long run to diagnose and treat cancers earlier rather than wait and have to provide expensive care for advanced stage cancers."We all agree that we've got to do a better job of figuring out who would benefit from P.S.A. screening," said Dr. Scott Eggener, a prostate cancer specialist at the University of Chicago. "But a blanket statement of just doing away with it altogether ... seems over-aggressive and irresponsible."Dr. Deepak Kapoor, chairman and chief executive of Integrated Medical Professionals, which includes the nation's largest urology practice, said "We will not allow patients to die, which is what will happen if this recommendation is accepted."That task force's recommendation isn't final - it's a draft open for public debate. And obviously the debate is already under way.

BEIJING, Jan. 9 (Xinhua) -- The United States Treasury Secretary Timothy Geithner will discuss economic ties and exchange views with Chinese officials on the global economic situation during his trip to China, Foreign Ministry spokesman Liu Weimin said on Monday.Liu said at a regular press briefing that Geithner will visit China from Jan. 10 to 11 as the U.S. President's special representative. Premier Wen Jiabao, Vice President Xi Jinping, Vice Premier Li Keqiang and Vice Premier Wang Qishan will meet with him during the visit.Liu said China and the U.S. have agreed to build a partnership of cooperation based on mutual respect and mutual benefit."The global economic and financial situation is facing severe challenges. Further strengthening China-U.S. economic and trade cooperation will be helpful in meeting these challenges," Liu said."China has proposed further promoting the two countries' economic and trade cooperation and hopes the U.S. will work with China toward this end," Liu said.

SHIJIAZHUANG, Oct. 16 (Xinhua) -- Chickens began being domesticated in China about 8,000 years ago, far earlier than in the rest of the world,according to a recent study on fossils uncovered in north China's Hebei Province.Archaeologists said they had unearthed 116 fossil specimens from 23 types of animals, including pig, dog, chicken, tortoise, fish, and clam, at the Cishan Site, a Neolithic village relic in the city of Wu'an.Several bone fragments were identified to be from domesticated chickens, said Qiao Dengyun, head of the Handan Municipal Institute of Cultural Relics and Archaeology."The chicken bones found at Cishan are slightly larger than wild jungle fowls, but smaller than that of a modern domesticated chicken," said Qiao.Qiao said the bone fossils date back to 6,000 BC, earlier than the oldest domesticated chicken previously discovered in India that dated back 4,000 years."Most of the bones were from cocks, indicating that ancient residents used the practice of killing cocks for their meat and raising hens for their eggs," said Qiao.The Cishan Site, which dates back 10,000 years, was first discovered in the 1970s. At the site, experts have found remnants of China's oldest cultivated millet as well as walnut shells, a discovery that challenged the popular belief that walnuts had been brought to China from what is now Xinjiang Uygur Autonomous Region and Central Asia.

NAIROBI, Nov. 15 (Xinhua) -- The UN refugee agency said on Tuesday there has been an outbreak of cholera in Dadaab, the world's largest refugee camp in Kenya, which is believed to have started among new arrivals who had most likely acquired it in Somalia or en route to the camp.The UN High Commissioner for Refugees (UNHCR) said the situation in Dadaab, home to Somalis fleeing famine and conflict, is being exacerbated by heavy rains and accompanying risks of waterborne diseases."Rains and flooding had affected the trucking of water to parts of the camps, and we fear some refugees resorted to using unsafe water from flooded areas," the UN refugee agency said in a statement released in Nairobi.According to UNHCR, there are now 60 cases in the camps, including 10 laboratory-confirmed cases and one refugee death. To manage the outbreak, UNHCR and partners have set up cholera treatment centres for severe cases, it said.The UN agency deplored insecurity which it said continues to affect aid efforts more than a month after the kidnapping of three aid workers in Kenya's Dadaab refugee complex.The UNHCR says insecurity is still hampering aid efforts in the area, despite the deployment of 100 Kenyan policemen in the last month.UNHCR is assisting them with vehicles, shelter and telecommunications equipment."Together with our partners, we are exploring options to gradually resume full operations despite continued security incidents in and around Dadaab. In the meantime, refugees are still receiving life-saving aid, namely food, water and health care," it said.According to the agency, most cases can be managed through oral rehydration solutions (ORS) that can be given at home or at the health posts."We are working with UNICEF and the Ministry of Health to train health workers in the community-based management of diarrhoea so that patients can begin treatment at home," it said.UNHCR said it has increased levels of chlorine, which kills cholera-causing bacteria, at water points in the camps. These, it said, are monitored to make sure they are maintained at the correct levels."We are also promoting hygiene practices among the refugees, especially the use of latrines and hand washing with soap. Each refugee received 250 grams of soap with the latest food distribution and this will continue monthly for several months," UNHCR said.Dadaab is home to more than 400,000 registered refugees, nearly all of them Somali, with an estimated 70,000 people having arrived in July and August as conditions in their homeland rapidly deteriorated.

BEIJING, Nov. 1 (Xinhua) -- Commander-in-chief of China's manned space program Chang Wanquan announced early Tuesday that the launch of Shenzhou-8 unmanned spacecraft is successful.The spacecraft was successfully sent into the designated orbit after the blastoff at 5:58 a.m. at the Jiuquan Satellite Launch Center in northwestern desert area, carried by an upgraded Long March-2F rocket.It is heading to rendezvous with the Tiangong-1, or "Heavenly Palace-1" that was put into space on Sept. 29 for the country's first space docking.The docking, if successful, will pave the way for China to operate a permanent space station around 2020, and make the nation the world's third to do so.The launch was attended by Chinese Vice Premier Zhang Dejiang. It was also observed by senior experts from the European Space Agency and the German Aerospace Center at the launch site.The docking will happen within two days after the launch of the Shenzhou-8 at a height of 343 km above Earth's surface. The spacecraft will return to Earth after two docking operations.

来源：资阳报