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为了解海南山区疟疾“上山感染”的严重程度及其传播特征，并探讨控制“上山感染”的方法，１９９１～１９９６年在海南山区南桥乡，通过纵向调查和定群研究，表明上山住宿者感染疟疾的相对危险度为未上山住宿者的６．２～６．５倍，感染恶性疟的相对危险度为１１．３～３６．８倍。通过对上山住宿人群采用蚊帐保护，减少人蚊按触，降低媒介能量，同时加强疟疾病例治疗，将传染源控制至低水平，则可有效控制“上山感染”
In order to understand the severity of malaria “uphill infection” and its transmission characteristics in Hainan mountain area and to explore ways to control “uphill infection”, from 1991 to 1996 in Nanqiao Township, Hainan Province, through vertical investigation and group study, The relative risk of malaria infection is 6.2 to 6.5 times that of non-mountain lodging residents, and the relative risk of infection with falciparum malaria is 11.3-36.8 times. Through the use of mosquito nets to protect mountain residents, reduce exposure of mosquitoes and mosquitoes, reduce the energy of the media, and strengthen the treatment of malaria cases, the source of infection control to a low level, you can effectively control the “mountain infection”