[Photo/VCG] A cancer patient with HIV may have been cleared of the virus after receiving a bone marrow transplant from an HIV-resistant donor, thought to be the second such case after a bone marrow transplant, according to research published in the journal Nature on Tuesday. The patient, whose identity was not disclosed, stopped taking antiretroviral drugs 16 months after the transplant, and the virus has not been detected during an additional 18 months, according to the study. In the research, led by Ravindra Gupta, an infectious diseases physician at the University of Cambridge in the United Kingdom, the patient received bone marrow stem cells from a donor with a rare genetic mutation known as CCR5 delta 32, which produces immunity to HIV infection, according to Nature. The first such case of an HIV patient being cleared of the virus after a bone marrow transplant happened a decade ago to Timothy Brown, known as the Berlin patient, who is still free of the virus. The breakthrough suggests the first case was not a one-off and could pave the way for future treatments, Nature said in a release on its website. Gupta described his patient as functionally cured and in remission. But he cautioned, It's too early to say he's cured, according to a Reuters report. The procedure is expensive, complex and risky, and will not be a common method to cure all patients with HIV, the report said. make your own wristbands
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BEIJING - Several northern Chinese regions have stepped up the fight against air pollution, with measures including closing polluting firms and coal boilers and limiting car use.Authorities in Ningxia Hui Autonomous Region have unveiled a clean air action plan (2018-2020), seeking to shut down, relocate or renovate over 1,900 polluting firms in the next three years.Of all, 1,089 firms should be shut down or relocated and 816 should suspend operations to improve pollutant treatment facilities, according to the plan.The move aims to cut outdated and excess industrial capacity to reduce energy consumption and pollutant emissions as the region is seeking quality growth, said Zhao Xuhui, director of the regional department of industry and information technology, on Tuesday.To improve air quality, authorities in the coal-rich Shanxi Province ordered to close low-efficient coal boilers and others that do not have sufficient pollutant treatment facilities by the end of the year.In Zhengzhou, capital of Henan Province, the city government has ordered about half of the vehicles off roads in its urban areas from Wednesday to the end of the year.Vehicles with odd-numbered license plates will be allowed to drive around on odd-numbered days and those with even-numbered plates will drive on even-numbered days, the city government said Tuesday.The ban does not apply to military and police cars, fire engines, ambulances, taxis, school buses and new energy vehicles, it said.Vehicle emissions contribute to 25.5 percent of the PM2.5 concentration in Zhengzhou.By the end of 2017, the city had 3.78 million vehicles, ranking the seventh among cities nationwide.
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