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CHANGSHA -- Central China's Hunan Province said it has taken effective measures to prevent epidemics after about 2 billion rats chomped their way through cropland around the Dongting Lake, the country's second largest freshwater lake. "It's not possible for rodent-borne diseases to break out in the lake area," said Chen Xiaochun, vice director of the provincial health department. Local health authorities have been watching closely over the rodent situation after the rats fled their flooded island homes and invaded 22 counties around the Dongting Lake last week, he told a press conference on Wednesday. Results of their observation are reported daily to the provincial health department and the public, he said. Meanwhile, local health and disease prevention and control authorities have intensified management of raticide and pesticide, for fear they might contaminate food and water, Chen added. No human infection of any rat-borne disease has been reported in the central Chinese province since 1944. The provincial government also ruled out widespread suspicions that rats flooded the area because one of their natural enemies -- snakes -- had been served at dinner tables. "The Dongting Lake area is not an ideal habitat for snakes," said Deng Sanlong, a top forestry official in the province, "and the only two species that inhabitate the region feed largely on fish and frogs." He said the top enemy of the rats are hawks that spend winter in the wetland around the lake but fly away in spring. China's Ministry of Agriculture and the Hunan provincial government have allocated 900,000 yuan in total to eradicate the rats.

WASHINGTON - Post-menopausal Chinese women who eat a Western-style diet heavy in meat and sweets face a higher risk of breast cancer than their counterparts who stick to a typical Chinese diet loaded with vegetables and soy, a study found. The researchers, writing on Tuesday in the journal Cancer Epidemiology, Biomarkers & Prevention, tracked about 3,000 women in Shanghai, about half of whom were diagnosed with breast cancer. Post-menopausal women who ate a Western-style diet -- beef, pork, shrimp, chicken, candy, desserts and dairy products -- were 60 percent more likely to develop breast cancer than those eating a diet based on vegetables and soy, the study found. The study found the increased risk most acute for cancer involving so-called estrogen-receptor positive tumors. The post-menopausal women with the Western-style diet experienced a 90 percent increased risk for this type of breast cancer. One of the researchers, Marilyn Tseng of the Fox Chase Cancer Center in Philadelphia, said the study detected a much smaller increased breast cancer risk among younger women on a Western-style diet which was not statistically significant. Tseng noted that breast cancer rates among Asian women traditionally have been low but have been rising in recent years. Some experts have suspected that the adoption of a more Western diet may be at least partly to blame. "The increase in risk did appear to be due to the increase in red-meat intake," Tseng said in a telephone interview. "But we didn't do specific analyses to see if it could have been due to other parts of a western diet, like the high intake of desserts or high intake of dairy." The findings also suggested such a diet may increase breast cancer likelihood by increasing obesity, the researchers said. "We are the first to find evidence for an increased risk of breast cancer for a Western-style dietary pattern in an Asian population," the researchers wrote. They detected two dietary patterns in the women, who were diagnosed with their cancer from 1996 to 1998 and were subsequently interviewed about what they ate. One was a "vegetable-soy" pattern based on tofu, cauliflower, beans, bean sprouts and green leafy vegetables, with not much meat. The other was a "meat-sweet" pattern among women gravitating away from typical Chinese fare in favor of more Western foods. "Most studies have tended to look at single dietary factors. And what was unique about this study is that we tried to describe patterns of intake -- foods that go together, that seem to occur together in the diet," Tseng said.

China on Friday issued its first regulation on human organ transplants, banning organizations and individuals from trading human organs in any form.The regulation, issued by the State Council, or China's cabinet, will go into effect on May 1.The regulation does not apply to transplants of human tissue, such as cells, cornea and marrow.Human organ transplants are defined as the process of taking a human organ or part of a human organ - such as the heart, lung, liver, kidney and pancreas - from a donor and transplanting it into a patient's body to replace his or her sick or damaged organ.The regulation stipulates that human organ transplants should respect the principle of being voluntary and free donation.The regulation comprises 32 articles in five chapters, including human organ donations, human organ transplants, legal responsibilities and supplementary points. It covers transplant quality and aims to safeguard citizen's lawful rights.

NANJING - The legislature of the eastern province of  Jiangsu has amended the law to clearly define sexual harassment and allow complainants to sue.The Standing Committee of the Jiangsu Provincial People's Congress on Thursday passed the revised Jiangsu Provincial Measures for Implementing China's Law on Protection of Women's Rights, saying "sexual harassment of women in the form of spoken and written language, images, electronic information and bodily gestures is prohibited." The measures allow those who claim that they have been harassed to report such cases to employers, authorities and the police, which must prevent or stop such behavior. Women can also sue those they contend harassed them.Although sexual harassment was included in an amendment of the national law in 2005, the legislation didn't clearly define harassment, which made it difficult to prove in court, said Wang Lasheng, vice chairman of the Legal Affairs Committee of the Jiangsu Provincial People's Congress."A clear definition of the forms of sexual harassment will definitely help law enforcement and improve victims' awareness of self-protection," said Wang.Defining sexual harassment at the local level was a welcome attempt to supplement the national law, said Wang, adding that similar statutes have been passed in Shanghai, Zhejiang, Jiangxi, Shaanxi and Anhui provinces and Ningxia Hui Autonomous Region. These laws allow complainants to file claims or sue.

Chinese children have grown taller and heavier in recent years but their health is getting worse, a senior education official said on Wednesday, criticising pressure from parents and teachers to study. A pupil raises his hand to answer questions at a class in Jiaxing, east China's Zhejiang Province, in this photo taken on April 6, 2005. "The inappropriate educational concepts, which put study ahead of anything else and impose great burden on pupils, have seriously affected their healthy growth," said Liao Wenke, an official in charge of youth development. "The endurance, strength and lung capacity of the children continue to fall - and rapidly, especially in the last 10 years," Liao told a news conference. The average height of children aged seven to 18 had increased by up to 1 cm in 2005 from 2000, and the average weight had also risen - but the performance in sports had declined. "Obese schoolchildren are increasing in numbers swiftly, and the percentage of myopia remains high," he said. China now has the world's second highest myopia rate among schoolchildren, blamed in part on too much study, and obesity among the young has become a major health concern. Chinese parents and teachers pressure children to succeed at an early age, with holidays and leisure time often sacrificed for homework to ensure success in college entrance exams. The education ministry had urged schools nationwide to pay more attention to sports and lighten children's burden by reducing homework and increasing exercise, Liao said. President Hu Jintao also emphasised the importance of sports for children this week, urging local governments to use "healthy competition" to shape Chinese youth.