National Institute of Malaria Research, Sector-8, Dwarka, New Delhi; CHC Dhakoli, Zirakhpur, Punjab, India.
Department of Control of Neglected Tropical Diseases, World Health Organization, Geneva, Switzerland.
J Vector Borne Dis. 2021 Jul-Sep;58(3):219-227. doi: 10.4103/0972-9062.328974.
BACKGROUND & OBJECTIVES: Universal coverage of population with long-lasting insecticidal nets (LLINs) living in endemic areas inhabited by ethnic tribal communities or in difficult to reach areas was found effective for disease control where other interventions such as indoor residual spraying have limited success because of operational issues. Evaluation of different LLINs with varied insecticides and fabrics are being evaluated to meet the demand of new products. This study was undertaken on two brands of LLINs, DuraNet© and Interceptor® that varied in fabric and manufacturing technologies to assess the usability in field conditions for atleast three years.
In large-scale field trials DuraNet©, alpha cypermethrin incorporated polyethylene net, was evaluated in Odisha state while, Interceptor® net, alpha cypermethrin coated polyester net was evaluated in Chhattisgarh and Gujarat states for a period of three years following WHO guidelines. Durability, usage pattern and washing behavior were monitored through periodic surveys and physical examination of nets.
Survivorship of both the nets was 84-100% and every night usage rate was >62% in all seasons. Washing frequency was largely within the prescribed limits. The proportion of DuraNet© with holes was 26.7% in year one 74% in year three. In Gujarat, proportion of Interceptor® nets with holes at six months was 33.3% increased to 87% in year three and in Chhattisgarh, 6.7% after six months to 93.3% after three years of use respectively.
INTERPRETATION & CONCLUSION: Both the nets revealed a useful life of three years under the field condition.
在流行地区，为了控制疾病，为居住在部落社区或难以到达地区的人群提供长效驱虫蚊帐（LLINs）的全民覆盖已被证明是有效的，而其他干预措施，如室内滞留喷洒，由于操作问题，效果有限。正在评估不同的 LLINs，包括使用不同杀虫剂和织物的产品，以满足新产品的需求。本研究评估了两种 LLINs，即 DuraNet©和 Interceptor®，它们在织物和制造技术上有所不同，以评估其在野外条件下至少三年的可用性。
在大规模现场试验中，根据世界卫生组织的指南，在奥里萨邦评估了含有阿尔法氯菊酯的聚乙烯网制成的 DuraNet©，而在恰蒂斯加尔邦和古吉拉特邦评估了含有阿尔法氯菊酯的聚酯网制成的 Interceptor®。通过定期调查和对蚊帐的物理检查，监测耐久性、使用模式和洗涤行为。
两种蚊帐的存活率均为 84-100%，所有季节的每晚使用率均>62%。洗涤频率在很大程度上符合规定限制。在第一年，DuraNet©有孔的比例为 26.7%，在第三年为 74%。在古吉拉特邦，六个月时带有孔的 Interceptor®网的比例为 33.3%，在第三年增加到 87%，在恰蒂斯加尔邦，六个月时为 6.7%，在第三年增加到 93.3%。
在野外条件下，这两种蚊帐都显示出了三年的有用寿命。
