Effect of metofluthrin-impregnated spatial repellent devices in combination with new long-lasting insecticidal nets (Olyset ® Plus) on pyrethroid-resistant malaria vectors and malaria prevalence - Field trial in south-eastern Malawi.

Effect of metofluthrin-impregnated spatial repellent devices in combination with new long-lasting insecticidal nets (Olyset® Plus) on pyrethroid-resistant malaria vectors and malaria prevalence - Field trial in south-eastern Malawi. Jpn J Infect Dis. 2019 Oct 31;: Authors: Kawada H, Nakazawa S, Shimabukuro K, Ohashi K, Kambewa EA, Foster Pemba D Abstract Long-lasting insecticidal nets (LLINs) experience some operational problems that reduce their effectiveness, such as limited spaces for hanging, biting of mosquitoes outdoors, a shift of key biting time from midnight to dawn or dusk, and development of pyrethroid resistance in mosquitoes. The concept of spatial repellency may be a countermeasure to overcome the above issues. The effect of the combinational use of metofluthrin-impregnated spatial repellent devices (MSRD) and LLIN (Olyset® Plus) on malaria prevalence and vector mosquitoes were examined in malaria endemic villages in south-eastern Malawi. The intervention reduced the infection rate in children as well as the number of pyrethroid-resistant vector mosquitoes. In order to effective malaria control, continued intervention using MSRD at 3-month intervals with 2 strips per 10 m2 to reduce the density of malaria mosquitoes is recommended. PMID: 31666498 [PubMed - as supplied by publisher]
Source: Japanese Journal of Infectious Diseases - Category: Infectious Diseases Authors: Tags: Jpn J Infect Dis Source Type: research