Are insecticide-treated bednets more protective against Plasmodium falciparum than Plasmodium vivax-infected mosquitoes?

Malaria Journal
M J Bockarie, H Dagoro

Abstract

The outcomes of insecticide-treated bednet (ITN) interventions for malaria control in Papua New Guinea tend to suggest a differential protective effect against Plasmodium falciparum and Plasmodium vivax. Little is known about the impact of ITNs on the relative abundance of mosquitoes infected with either P. falciparum or P. vivax. This paper describes the biting cycle of P. falciparum and P. vivax-infected mosquitoes and the impact of an ITN intervention on the proportion of mosquitoes infected with either parasite species. Entomological investigations were performed in East Sepik (ESP) and New Ireland Provinces (NIP) of PNG. Mosquitoes were collected using the all-night (18:00-06:00) landing catch and CDC light-trap methods and species specific malaria sporozoite rates were determined by ELISA. The distribution of sporozoite positive mosquitoes in three four-hour periods (18:00-22:00, 22:00-02:00 & 02:00-06:00) showed that a higher proportion of P. vivax-infected mosquitoes were biting before people retired to bed under the protection of bednets. In the intervention village, the 308 mosquitoes collected before ITNs were introduced included eight (2.0%) P. falciparum-positive and four (1.0%) P. vivax-positive specimens, giving ...Continue Reading

References

Nov 1, 1990·Transactions of the Royal Society of Tropical Medicine and Hygiene·T R BurkotR Spark
Jan 1, 1996·Transactions of the Royal Society of Tropical Medicine and Hygiene·M J BockarieM Alpers
Aug 27, 2002·The Journal of Infectious Diseases·Jennifer L Cole-TobianChristopher L King

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Citations

Jun 18, 2010·Malaria Journal·Jackie CookChris Drakeley
Sep 13, 2012·PLoS Neglected Tropical Diseases·Peter W GethingSimon I Hay
Apr 16, 2014·Malaria Journal·Katherine E BattleSimon I Hay
Nov 21, 2015·PLoS Neglected Tropical Diseases·Rosalind E HowesSimon I Hay
Nov 23, 2019·Journal of Medical Entomology·Marc J LajeunesseNicholas E Yanez
May 29, 2012·IUBMB Life·Janina PreussKatja Becker
Sep 19, 2018·Malaria Journal·Kinley WangdiArchie C A Clements
May 15, 2020·Trends in Parasitology·Ric N PriceKamini Mendis

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