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艾滋病疫苗真来了?!强生宣布:志愿者100%产生抗体
艾滋病 疫苗最新进展,强生宣布志愿者100%产生抗体。
据北京日报8月9日讯,强生公司近日宣布了全球首次HIV疫苗人体临床试验结果,这一多中心、随机、安慰剂对照、双盲的1/2a期临床试验招募了393位健康志愿者,志愿者分别来自美国、卢旺达、乌干达、南非和泰国,结果显示,志愿者对HIV疫苗耐受性良好,且100%产生了对抗HIV的抗体。
艾滋病疫苗研究意义
艾滋病是一种全球性疾病,蔓延速度快,死亡率高。自1981年首次发现艾滋病以来,HIV的感染在世界范围内迅速流行。至2002年底世界上至少有193个国家和地区发现有HIV感染者死亡,且其仍以每天感染15000人的速度快速扩展,其中95%以上的HIV感染者生活在发展中国家,中国HIV感染人数现已超过100万。已造成全球累计6000余万人感染,2000余万人死于AIDS,艾滋病在非洲是首要死亡病因,而在全球范围内则是第四大死亡病因。
当前治疗水平
HIV/AIDS的流行对社会和经济产生了极大的负面影响。直到21世纪还没有针对HIV的特效治疗方法,虽然高效抗逆转录病毒的治疗方法(highly active antiretroviral therapy,HAART)已经在减轻患者痛苦、延长患者寿命等方面取得了一定的效果,但用于治疗HIV感染的药物只能控制病毒复制,不能彻底清除病毒,而且抗HIV药物价格昂贵,具有较严重的副作用,药物使用不当,也会诱发耐药株的产生。因此,研制安全、有效的疫苗是控制HIV传播的重要手段之一。HIV易感者通过接种艾滋病疫苗,发生免疫反应,从而产生对疾病的特异抵抗力,提高免疫水平,达到预防和治疗HIV的目的。
责任编辑:孙鑫鑫 CN066
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