London School of Hygiene and Tropical Medicine, London, UK.
Mem Inst Oswaldo Cruz. 2009 Dec;104(8):1183-6. doi: 10.1590/s0074-02762009000800018.
Observational studies in the Indian subcontinent have shown that untreated nets may be protective against visceral leishmaniasis (VL). In this study, we evaluated the effect of untreated nets on the blood feeding rates of Phlebotomus argentipes as well as the human blood index (HBI) in VL endemic villages in India and Nepal. The study had a 'before and after intervention' design in 58 households in six clusters. The use of untreated nets reduced the blood feeding rate by 85% (95% CI 76.5-91.1%) and the HBI by 42.2% (95% CI 11.1-62.5%). These results provide circumstantial evidence that untreated nets may provide some degree of personal protection against sand fly bites.
在印度次大陆进行的观察性研究表明，未经处理的蚊帐可能对内脏利什曼病（VL）具有保护作用。在这项研究中，我们评估了未经处理的蚊帐对印度和尼泊尔 VL 流行村庄中致倦库蚊的吸血率以及人类血液指数（HBI）的影响。该研究在六个集群中的 58 户家庭中采用了“干预前和干预后”设计。使用未经处理的蚊帐可使吸血率降低 85%（95%CI 76.5-91.1%），HBI 降低 42.2%（95%CI 11.1-62.5%）。这些结果提供了间接证据，表明未经处理的蚊帐可能在一定程度上对沙蝇叮咬提供个人保护。
