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哥本哈根大学的一项研究报告称，导致人体患血吸虫病的危险物种—曼氏裂体吸虫的数量在未来将会大幅减少。该报告的结论与认为气候变化必将导致疾病更大范围蔓延的传统论断大相径庭。其依据是气候变化导致该寄生虫的宿主蜗牛失去了适宜的生存环境。研究员们按照可能出现的不同气候变化情形及可能影响寄生虫繁殖的各种条件，构建了蜗牛栖息地从现在到2080年之间的变化模型。其结论是，由于宿主蜗牛的地理分布将大范围缩减，全非洲感染该病的风险将最多减少19%。
The dangerous parasite Schistosoma mansoni that causes snail fever in humans could become significantly less common in the future a new international study led by researchers from the University of Copenhagen predicts. The results are surprising because they contradict the general assumption that climate change leads to greater geographical spread of diseases. The explanation is that the parasite's host snails stand to lose suitable habitat due to climate change. The researchers modeled the changes in snail habitat from today to 2080 under various climate change scenarios， and what that will mean for the spread of the parasite. The forecasts show up to 19 % reduction in the total geographical area of infection risk in Africa， as the geographical distribution of the main host snail will be reduced significantly.
（Source： http：//www.sciencedaily.com）
The dangerous parasite Schistosoma mansoni that causes snail fever in humans could become significantly less common in the future a new international study led by researchers from the University of Copenhagen predicts. The results are surprising because they contradict the general assumption that climate change leads to greater geographical spread of diseases. The explanation is that the parasite's host snails stand to lose suitable habitat due to climate change. The researchers modeled the changes in snail habitat from today to 2080 under various climate change scenarios， and what that will mean for the spread of the parasite. The forecasts show up to 19 % reduction in the total geographical area of infection risk in Africa， as the geographical distribution of the main host snail will be reduced significantly.
（Source： http：//www.sciencedaily.com）