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The costs and logistics of distributing 'forest packs' containing novel vector control tools to forest-exposed populations in Cambodia.
Malar J
January 2025
Malaria Elimination Initiative, Institute for Global Health Sciences, University of California San Francisco, San Francisco, USA.
Background: Malaria incidence in the Greater Mekong Subregion has been on the decline, and most remaining malaria risk in the region is concentrated among hard-to-reach populations, especially those with exposure to forested areas. New vector control tools focused on outdoor protection in forest settings are needed for these populations.
Methods: The delivery of a 'forest pack' containing a volatile pyrethroid spatial repellent (VPSR), a topical repellent, and pyrethroid treatment of clothing was evaluated in an operational study in Cambodia.
First Report of the Gene Mutations Associated with Permethrin Resistance in Head Lice ( De Geer, 1767) from Primary School Children in Istanbul (Türkiye) and Nagarkot (Nepal).
Pathogens
December 2024
Department of Medical Microbiology, Acibadem University School of Medicine, Istanbul 34752, Türkiye.
Head lice infestation (HLI), caused by De Geer, 1767, has long been a common global problem of school children. Permethrin is an old pyrethroid derivative that has been used commonly for its treatment, and it exerts its activity over the voltage-sensitive calcium channels (VSCC) of the lice. There has been a growing list of persistent HLI cases lately in the world among patients using permethrin, and knockdown resistance (kdr)-related point mutations on VSCC have been identified and reported from those resistant lice samples.
View Article and Find Full Text PDFPlasticity in Gene Expression Patterns and Gene Possibly Involved in the Etofenprox-Resistant Population of White-Backed Planthopper, .
Int J Mol Sci
December 2024
Agriculture and Life Sciences Research Institute, Kangwon National University, Chuncheon 24341, Republic of Korea.
The white-backed planthopper (WBPH) poses a significant threat to rice crops globally. A bioassay was conducted on three WBPH populations collected from Korean rice fields to assess the effectiveness of five insecticides, including etofenprox and fenobucarb. The results showed a mortality rate of over 97% at the recommended concentration for carbamate and organophosphate insecticides.
View Article and Find Full Text PDFTranscriptome Analysis Unveils Molecular Mechanisms of Acaricide Resistance in Two-Spotted Spider Mite Populations on Hops.
Int J Mol Sci
December 2024
Department of Entomology, Pennsylvania State University, University Park, PA 16802, USA.
Broad-spectrum crop protection technologies, such as abamectin and bifenthrin, are globally relied upon to curb the existential threats from economic crop pests such as the generalist herbivore Koch (TSSM). However, the rising cost of discovering and registering new acaricides, particularly for specialty crops, along with the increasing risk of pesticide resistance development, underscores the urgent need to preserve the efficacy of currently registered acaricides. This study examined the overall genetic mechanism underlying adaptation to abamectin and bifenthrin in populations from commercial hop fields in the Pacific Northwestern region of the USA.
View Article and Find Full Text PDFEsterase-Mediated Pyrethroid Resistance in Populations of an Invasive Malaria Vector from Ethiopia.
Genes (Basel)
December 2024
Joe C. Wen School of Population & Public Health, University of California at Irvine, Irvine, CA 92697, USA.
Background: The swift expansion of the invasive malaria vector throughout Africa presents a major challenge to malaria control initiatives. Unlike the native African vectors, thrives in urban settings and has developed resistance to multiple classes of insecticides, including pyrethroids, organophosphates, and carbamates.
Methods: Insecticide susceptibility tests were performed on field-collected mosquitoes from Awash Sebac Kilo, Ethiopia, to assess insecticide resistance levels.
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