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Indoor residual spraying

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https://www.readbyqxmd.com/read/29141768/rat-fall-surveillance-coupled-with-vector-control-and-community-education-as-a-plague-prevention-strategy-in-the-west-nile-region-uganda
#1
Karen A Boegler, Linda A Atiku, Russell E Enscore, Titus Apangu, Joseph Tendo Mpanga, Sarah Acayo, John Kaggwa, Paul S Mead, Brook M Yockey, Kiersten J Kugeler, Martin E Schriefer, Kalanthe Horiuchi, Kenneth L Gage, Rebecca J Eisen
Plague, primarily a disease of rodents, is most frequently transmitted by fleas and causes potentially fatal infections in humans. In Uganda, plague is endemic to the West Nile region. Primary prevention for plague includes control of rodent hosts or flea vectors, but targeting these efforts is difficult given the sporadic nature of plague epizootics in the region and limited resource availability. Here, we present a community-based strategy to detect and report rodent deaths (rat fall), an early sign of epizootics...
October 23, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29110724/quantifying-the-intensity-of-permethrin-insecticide-resistance-in-anopheles-mosquitoes%C3%A2-in-western-kenya
#2
Seline Omondi, Wolfgang Richard Mukabana, Eric Ochomo, Margaret Muchoki, Brigid Kemei, Charles Mbogo, Nabie Bayoh
BACKGROUND: The development and spread of resistance among local vectors to the major classes of insecticides used in Long-Lasting Insecticidal Nets (LLINs) and Indoor Residual Spraying (IRS) poses a major challenge to malaria vector control programs worldwide. The main methods of evaluating insecticide resistance in malaria vectors are the WHO tube bioassay and CDC bottle assays, with their weakness being determination of resistance at a fixed dose for variable populations. The CDC bottle assay using different insecticide dosages has proved applicable in ascertaining the intensity of resistance...
November 6, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29110670/indoor-and-outdoor-malaria-vector-surveillance-in-western-kenya-implications-for-better-understanding-of-residual-transmission
#3
Teshome Degefa, Delenasaw Yewhalaw, Guofa Zhou, Ming-Chieh Lee, Harrysone Atieli, Andrew K Githeko, Guiyun Yan
BACKGROUND: The widespread use of indoor-based malaria vector control interventions has been shown to alter the behaviour of vectors in Africa. There is an increasing concern that such changes could sustain residual transmission. This study was conducted to assess vector species composition, feeding behaviour and their contribution to indoor and outdoor malaria transmission in western Kenya. METHODS: Anopheles mosquito collections were carried out from September 2015 to April 2016 in Ahero and Iguhu sites, western Kenya using CDC light traps (indoor and outdoor), pyrethrum spray catches (PSCs) (indoor) and pit shelters (outdoor)...
November 6, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29097639/anopheline-mosquitoes-behaviour-and-entomological-monitoring-in-southwestern-ethiopia
#4
Kidane Lelisa, Abebe Asale, Behailu Taye, Daniel Emana, Delenasaw Yewhalaw
BACKGROUND & OBJECTIVES: Despite a tremendous expansion in the financing and coverage of malaria control programmes, the disease continues to be a global health threat. This study was conducted to assess the entomological parameters of anopheline mosquitoes, viz. species composition, abundance, longevity, behaviour and infectivity rates in Kersa district, Jimma zone, southwestern Ethiopia. METHODS: Mosquito collection was carried out from each selected household in each of the nine selected study villages of Kersa district, using CDC light-traps and pyrethrum spray catches (PSCs) for seven months (June to December 2014)...
July 2017: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/29095834/residual-malaria-transmission-dynamics-varies-across-the-gambia-despite-high-coverage-of-control-interventions
#5
Julia Mwesigwa, Jane Achan, Gian Luca Di Tanna, Muna Affara, Musa Jawara, Archibald Worwui, Majidah Hamid-Adiamoh, Fatoumatta Kanuteh, Sainey Ceesay, Teun Bousema, Chris Drakeley, Koen Peeters Grietens, Steve W Lindsay, Jean-Pierre Van Geertruyden, Umberto D'Alessandro
Over the last decades, malaria has declined substantially in The Gambia but its transmission has not been interrupted. In order to better target control interventions, it is essential to understand the dynamics of residual transmission. This prospective cohort study was conducted between June 2013 and April 2014 in six pairs of villages across The Gambia. Blood samples were collected monthly during the transmission season (June-December) from all residents aged ≥6 months (4,194 individuals) and then in April (dry season)...
2017: PloS One
https://www.readbyqxmd.com/read/29059179/cost-effectiveness-of-adding-indoor-residual-spraying-to-case-management-in-afghan-refugee-settlements-in-northwest-pakistan-during-a-prolonged-malaria-epidemic
#6
Natasha Howard, Lorna Guinness, Mark Rowland, Naeem Durrani, Kristian S Hansen
INTRODUCTION: Financing of malaria control for displaced populations is limited in scope and duration, making cost-effectiveness analyses relevant but difficult. This study analyses cost-effectiveness of adding prevention through targeted indoor residual spraying (IRS) to case management in Afghan refugee settlements in Pakistan during a prolonged malaria epidemic. METHODS/FINDINGS: An intervention study design was selected, taking a societal perspective. Provider and household costs of vector control and case management were collected from provider records and community survey...
October 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29049371/combining-epidemiology-with-basic-biology-of-sand-flies-parasites-and-hosts-to-inform-leishmaniasis-transmission-dynamics-and-control
#7
REVIEW
Orin Courtenay, Nathan C Peters, Matthew E Rogers, Caryn Bern
Quantitation of the nonlinear heterogeneities in Leishmania parasites, sand fly vectors, and mammalian host relationships provides insights to better understand leishmanial transmission epidemiology towards improving its control. The parasite manipulates the sand fly via production of promastigote secretory gel (PSG), leading to the "blocked sand fly" phenotype, persistent feeding attempts, and feeding on multiple hosts. PSG is injected into the mammalian host with the parasite and promotes the establishment of infection...
October 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29029614/field-assessment-of-a-novel-spatial-repellent-for-malaria-control-a-feasibility-and-acceptability-study-in-mondulkiri-cambodia
#8
Marco Liverani, Jacques Derek Charlwood, Harriet Lawford, Shunmay Yeung
BACKGROUND: Large-scale use of insecticide-treated nets and indoor residual spraying have contributed to a significant decrease in malaria transmission worldwide. Further reduction and progress towards elimination, however, require complementary control measures which can address the remaining gaps in protection from mosquito bites. Following the development of novel pyrethroids with high knockdown effects on malaria vectors, programmatic use of spatial repellents has been suggested as one potential strategy to fill the gaps...
October 13, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29029337/protective-effect-of-indoor-residual-spraying-of-insecticide-on-preterm-birth-among-pregnant-women-with-hiv-in-uganda-a-secondary-data-analysis
#9
Michelle E Roh, Stephen Shiboski, Paul Natureeba, Abel Kakuru, Mary Muhindo, Teddy Ochieng, Albert Plenty, Catherine A Koss, Tamara D Clark, Patricia Awori, Miriam Nakalambe, Deborah Cohan, Prasanna Jagannathan, Roly Gosling, Diane V Havlir, Moses R Kamya, Grant Dorsey
Background: Recent evidence demonstrated improved birth outcomes among HIV-uninfected pregnant women protected by indoor residual spraying of insecticide (IRS). Evidence regarding its impact on HIV-infected pregnant women is lacking. Methods: Data were pooled from two studies conducted before-and-after an IRS campaign in Tororo, Uganda among HIV-infected pregnant women who received bednets, daily trimethoprim-sulfamethoxazole (TMP-SMX), and combination antiretroviral therapy (c-ART) at enrollment...
October 6, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29026855/insecticide-susceptibility-status-of-wild-caught-sand-fly-populations-collected-from-two-leishmaniasis-endemic-areas-in-western-turkey
#10
Mehmet Karakus, Bayram Gocmen, Yusuf Özbel
BACKGROUND: In Turkey, vector control programs are mainly based on indoor residual spraying with pyrethroids against mosquitoes. No special control program is available for sand flies. Most insecticide susceptibility tests were done for mosquitoes but not for sand flies. We therefore aimed to determine the insecticide susceptibility against two commonly used insecticides; deltamethrin and permethrin, on wild-caught sand fly populations collected in two geographically separated leishmaniasis endemic areas...
March 2017: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/29023446/towards-elimination-of-visceral-leishmaniasis-in-the-indian-subcontinent-translating-research-to-practice-to-public-health
#11
REVIEW
Siddhivinayak Hirve, Axel Kroeger, Greg Matlashewski, Dinesh Mondal, Megha Raj Banjara, Pradeep Das, Ahmed Be-Nazir, Byron Arana, Piero Olliaro
BACKGROUND: The decade following the Regional Strategic Framework for Visceral Leishmaniasis (VL) elimination in 2005 has shown compelling progress in the reduction of VL burden in the Indian subcontinent. The Special Programme for Research and Training in Tropical Diseases (TDR), hosted by the World Health Organization (WHO) and other stakeholders, has coordinated and financed research for the development of new innovative tools and strategies to support the regional VL elimination initiative...
October 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29020970/informing-new-or-improved-vector-control-tools-for-reducing-the-malaria-burden-in-tanzania-a-qualitative-exploration-of-perceptions-of-mosquitoes-and-methods-for-their-control-among-the-residents-of-dar-es-salaam
#12
Christina Makungu, Stephania Stephen, Salome Kumburu, Nicodem J Govella, Stefan Dongus, Zoe Jane-Lara Hildon, Gerry F Killeen, Caroline Jones
BACKGROUND: The effectiveness of malaria prevention with long-lasting insecticidal nets and indoor residual spraying is limited by emerging insecticide resistance, evasive mosquito behaviours that include outdoor biting, sub-optimal implementation and inappropriate use. New vector control interventions are required and their potential effectiveness will be enhanced if existing household perceptions and practices are integrated into intervention design. METHODS: This qualitative descriptive study used focus groups discussions, in-depth interviews and photovoice methods to explore mosquito control perceptions and practices among residents in four study sites in Dar es Salaam, Tanzania...
October 11, 2017: Malaria Journal
https://www.readbyqxmd.com/read/29016335/performance-of-loop-mediated-isothermal-amplification-for-the-identification-of-submicroscopic-plasmodium-falciparum-infection-in-uganda
#13
Shereen Katrak, Maxwell Murphy, Patience Nayebare, John Rek, Mary Smith, Emmanuel Arinaitwe, Joaniter I Nankabirwa, Moses Kamya, Grant Dorsey, Philip J. Rosenthal, Bryan Greenhouse
Accurately identifying and targeting the human reservoir of malaria parasitemia is critical for malaria control, and requires a reliable and sensitive diagnostic method. Loop-mediated isothermal amplification (LAMP) is increasingly used to diagnose submicroscopic parasitemia. Although most published studies report the sensitivity of LAMP compared with nested polymerase chain reaction (PCR) as ≥ 80%, they have failed to use a consistent, sensitive diagnostic as a comparator. We used cross-sectional samples from children and adults in Tororo, Uganda, a region with high but declining transmission due to indoor residual spraying, to characterize the sensitivity and specificity of pan-Plasmodium LAMP for detecting submicroscopic infections...
October 9, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28990923/framework-for-evaluating-the-health-impact-of-the-scale-up-of-malaria-control-interventions-on-all-cause-child-mortality-in-sub-saharan-africa
#14
Yazoume Yé, Thomas P Eisele, Erin Eckert, Eline Korenromp, Jui A Shah, Christine L Hershey, Elizabeth Ivanovich, Holly Newby, Liliana Carvajal-Velez, Michael Lynch, Ryuichi Komatsu, Richard E Cibulskis, Zhuzhi Moore, Achuyt Bhattarai
Concerted efforts from national and international partners have scaled up malaria control interventions, including insecticide-treated nets, indoor residual spraying, diagnostics, prompt and effective treatment of malaria cases, and intermittent preventive treatment during pregnancy in sub-Saharan Africa (SSA). This scale-up warrants an assessment of its health impact to guide future efforts and investments; however, measuring malaria-specific mortality and the overall impact of malaria control interventions remains challenging...
September 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28990918/impact-evaluation-of-malaria-control-interventions-on-morbidity-and-all-cause-child-mortality-in-rwanda-2000-2010
#15
Erin Eckert, Lia S Florey, Jon Eric Tongren, S René Salgado, Alphonse Rukundo, Jean Pierre Habimana, Emmanuel Hakizimana, Kaendi Munguti, Noella Umulisa, Monique Mulindahabi, Corine Karema
The impressive decline in child mortality that occurred in Rwanda from 1996-2000 to 2006-2010 coincided with a period of rapid increase of malaria control interventions such as indoor residual spraying (IRS); insecticide-treated net (ITN) distribution and use, and improved malaria case management. The impact of these interventions was examined through ecological correlation analysis, and robust decomposition analysis of contextual factors on all-cause child mortality. Child mortality fell 61% during the evaluation period and prevalence of severe anemia in children 6-23 months declined 71% between 2005 and 2010...
September 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28990911/plasmodium-species-infecting-children-presenting-with-malaria-in-uganda
#16
Victor Asua, Stephen Tukwasibwe, Melissa Conrad, Andrew Walakira, Joaniter I Nankabirwa, Levicatus Mugenyi, Moses R Kamya, Samuel L Nsobya, Philip J Rosenthal
Contributions of species other than Plasmodium falciparum to human malaria in sub-Saharan Africa are uncertain. We collected blood from children aged 6 months to 10 years diagnosed with malaria by Giemsa-stained blood smears (176 subjects) or histidine rich protein-2-based rapid diagnostic tests (323 subjects) in 2016; 50 samples from each of 10 sites across Uganda were studied to identify infecting species. Of 499 available samples, 474 demonstrated plasmodial infection by polymerase chain reaction amplification of 18S ribosomal RNA genes, including P...
September 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28981684/pyrethroid-susceptibility-has-been-maintained-in-the-dengue-vector-aedes-aegypti-diptera-culicidae-in-queensland-australia
#17
Nancy M Endersby-Harshman, Juli Rochmijati Wuliandari, Lawrence G Harshman, Verena Frohn, Brian J Johnson, Scott A Ritchie, Ary A Hoffmann
Although pesticide resistance is common in insect vectors of human diseases, the evolution of resistance might be delayed if management practices are adopted that limit selection of resistance alleles. Outbreaks of dengue fever have occurred in Queensland, Australia, since the late 1800s, leading to ongoing attempts to control the mosquito vector, Aedes aegypti (L.). Since the 1990s, pyrethroid insecticides have been used for this purpose, but have been applied in a strategic manner with a variety of delivery methods including indoor residual spraying, lethal ovitraps, and use of insect growth regulators as larvicides...
November 7, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28964263/the-contribution-of-malaria-control-interventions-on-spatio-temporal-changes-of-parasitaemia-risk-in-uganda-during-2009-2014
#18
Julius Ssempiira, Betty Nambuusi, John Kissa, Bosco Agaba, Fredrick Makumbi, Simon Kasasa, Penelope Vounatsou
BACKGROUND: In Uganda, malaria vector control interventions and case management with Artemisinin Combination Therapies (ACTs) have been scaled up over the last few years as a result of increased funding. Data on parasitaemia prevalence among children less than 5 years old and coverage of interventions was collected during the first two Malaria Indicator Surveys (MIS) conducted in 2009 and 2014, respectively. In this study, we quantify the effects of control interventions on parasitaemia risk changes between the two MIS in a spatio-temporal analysis...
September 30, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28938876/assessment-of-the-effect-of-larval-source-management-and-house-improvement-on-malaria-transmission-when-added-to-standard-malaria-control-strategies-in-southern-malawi-study-protocol-for-a-cluster-randomised-controlled-trial
#19
Robert S McCann, Henk van den Berg, Peter J Diggle, Michèle van Vugt, Dianne J Terlouw, Kamija S Phiri, Aurelio Di Pasquale, Nicolas Maire, Steven Gowelo, Monicah M Mburu, Alinune N Kabaghe, Themba Mzilahowa, Michael G Chipeta, Willem Takken
BACKGROUND: Due to outdoor and residual transmission and insecticide resistance, long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS) will be insufficient as stand-alone malaria vector control interventions in many settings as programmes shift toward malaria elimination. Combining additional vector control interventions as part of an integrated strategy would potentially overcome these challenges. Larval source management (LSM) and structural house improvements (HI) are appealing as additional components of an integrated vector management plan because of their long histories of use, evidence on effectiveness in appropriate settings, and unique modes of action compared to LLINs and IRS...
September 22, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28927422/proximity-to-vector-breeding-site-and-risk-of-plasmodium-vivax-infection-a-prospective-cohort-study-in-rural-ethiopia
#20
Alexander Nissen, Jackie Cook, Eskindir Loha, Bernt Lindtjørn
BACKGROUND: Despite falling incidence and mortality since the turn of the century, malaria remains an important global health challenge. In the future fight against malaria, greater emphasis will have to be placed on understanding and addressing malaria caused by the Plasmodium vivax parasite. Unfortunately, due to years of neglect and underfunding, there are currently many gaps in knowledge of P. vivax malaria. The aims of the present study were to explore the association between distance to vector breeding site and P...
September 19, 2017: Malaria Journal
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