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Indoor residual spraying

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https://www.readbyqxmd.com/read/28427447/benchmarking-insecticide-resistance-intensity-bioassays-for-anopheles-malaria-vector-species-against-resistance-phenotypes-of-known-epidemiological-significance
#1
Nelius Venter, Shȕné V Oliver, Mbanga Muleba, Craig Davies, Richard H Hunt, Lizette L Koekemoer, Maureen Coetzee, Basil D Brooke
BACKGROUND: Insecticide use via indoor residual spraying (IRS) or treated nets is the primary method for controlling malaria vector populations. The incidence of insecticide resistance in vector populations is burgeoning globally making resistance management key to the design of effective malaria control and elimination strategies. Vector populations can be assessed for insecticide resistance using a binary (susceptible or resistant) classification based on the use of the standard WHO insecticide susceptibility assay for adult anopheline mosquitoes...
April 20, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28427415/insecticide-resistance-patterns-in-uganda-and-the-effect-of-indoor-residual-spraying-with-bendiocarb-on-kdr-l1014s-frequencies-in-anopheles-gambiae-s-s
#2
Tarekegn A Abeku, Michelle E H Helinski, Matthew J Kirby, James Ssekitooleko, Chris Bass, Irene Kyomuhangi, Michael Okia, Godfrey Magumba, Sylvia R Meek
BACKGROUND: Resistance of malaria vectors to pyrethroid insecticides has been attributed to selection pressure from long-lasting insecticidal nets (LLINs), indoor residual spraying (IRS), and the use of chemicals in agriculture. The use of different classes of insecticides in combination or by rotation has been recommended for resistance management. The aim of this study was to understand the role of IRS with a carbamate insecticide in management of pyrethroid resistance. METHODS: Anopheles mosquitoes were collected from multiple sites in nine districts of Uganda (up to five sites per district)...
April 20, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28418299/control-of-malaria-vector-mosquitoes-by-insecticide-treated-combinations-of-window-screens-and-eave-baffles
#3
Gerry F Killeen, John P Masalu, Dingani Chinula, Emmanouil A Fotakis, Deogratius R Kavishe, David Malone, Fredros Okumu
We assessed window screens and eave baffles (WSEBs), which enable mosquitoes to enter but not exit houses, as an alternative to indoor residual spraying (IRS) for malaria vector control. WSEBs treated with water, the pyrethroid lambda-cyhalothrin, or the organophosphate pirimiphos-methyl, with and without a binding agent for increasing insecticide persistence on netting, were compared with IRS in experimental huts. Compared with IRS containing the same insecticide, WSEBs killed similar proportions of Anopheles funestus mosquitoes that were resistant to pyrethroids, carbamates and organochlorines and greater proportions of pyrethroid-resistant, early exiting An...
May 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28414744/knockdown-resistance-mutations-predict-ddt-resistance-and-pyrethroid-tolerance-in-the-visceral-leishmaniasis-vector-phlebotomus-argentipes
#4
Bruno Gomes, Bidyut Purkait, Rinki Michelle Deb, Aarti Rama, Rudra Pratap Singh, Geraldine Marie Foster, Michael Coleman, Vijay Kumar, Mark Paine, Pradeep Das, David Weetman
BACKGROUND: Indoor residual spraying (IRS) with DDT has been the primary strategy for control of the visceral leishmaniasis (VL) vector Phlebotomus argentipes in India but efficacy may be compromised by resistance. Synthetic pyrethroids are now being introduced for IRS, but with a shared target site, the para voltage-gated sodium channel (VGSC), mutations affecting both insecticide classes could provide cross-resistance and represent a threat to sustainable IRS-based disease control. METHODOLOGY/PRINCIPAL FINDINGS: A region of the Vgsc gene was sequenced in P...
April 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28399303/efficacy-of-bendiocarb-used-for-indoor-residual-spraying-for-malaria-control-in-madagascar-results-with-local-anopheles-species-diptera-culicidae-from-experimental-hut-trials
#5
Sanjiarizaha Randriamaherijaona, Thiery Nirina Jean Jose Nepomichene, Jade Assoukpa, Yoann Madec, Sébastien Boyer
To control malaria in Madagascar, two primary vector control interventions are being scaled up: insecticide-treated nets and indoor residual spraying of bendiocarb, which was implemented in the Malagasy Central Highlands in 2009. The current efficacy of bendiocarb against Anopheles species was evaluated in a small-scale field trial. An experimental hut trial comparing the effectiveness of bendiocarb sprayed on five substrates (cement, wood, tin, mud, and vegetative materials) was carried out against Anopheles species in two study sites located in the eastern foothills of Madagascar...
March 13, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399299/assessment-of-ficam-vc-bendiocarb-residual-activity-on-different-wall-surfaces-for-control-of-anopheles-gambiae-s-s-diptera-culicidae-in-northern-uganda
#6
James Kirunda, Joseph Okello-Onen, Elizabeth A Opiyo, J B Rwakimari, Ranjith de Alwis, Michael Okia, Denis Ambayo, Benard Abola, David F Hoel
Insecticide decay rate on different wall surfaces is of importance to indoor residual spray (IRS) programs used as a malaria control intervention. Past IRS operations showed increasing populations of endophilic malaria vectors resting on indoor surfaces from various sites in Uganda following use of Ficam VC (bendiocarb) insecticide; variability of insecticide life was believed to be primarily due to wall surface type. Bendiocarb longevity was tested in the northern Uganda districts of Amuru, Apac, and Pader to assess its residual efficacy on three commonly encountered wall surfaces...
March 24, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399179/prevalence-and-factors-associated-with-malaria-parasitaemia-in-children-under-the-age-of-five-years-in-malawi-a-comparison-study-of-the-2012-and-2014-malaria-indicator-surveys-miss
#7
Maggie Zgambo, Balwani Chingatichifwe Mbakaya, Fatch Welcome Kalembo
BACKGROUND: Malaria is the main cause of morbidity and mortality among children under the age of five years in Malawi. The aim of this study was to compare the prevalence and factors associated with malaria parasitaemia among children under the age of five years in Malawi between the 2014 and 2012 Malaria Indicator Surveys (MISs). METHODOLOGY: Data on demographic factors, vector control interventions, and blood for malaria test were collected from a representative sample of children under the age of five years in Malawi through multistage cluster sampling method...
2017: PloS One
https://www.readbyqxmd.com/read/28381279/loa-loa-vectors-chrysops-spp-perspectives-on-research-distribution-bionomics-and-implications-for-elimination-of-lymphatic-filariasis-and-onchocerciasis
#8
REVIEW
Louise Kelly-Hope, Rossely Paulo, Brent Thomas, Miguel Brito, Thomas R Unnasch, David Molyneux
BACKGROUND: Loiasis is a filarial disease caused Loa loa. The main vectors are Chrysops silacea and C. dimidiata which are confined to the tropical rainforests of Central and West Africa. Loiasis is a mild disease, but individuals with high microfilaria loads may suffer from severe adverse events if treated with ivermectin during mass drug administration campaigns for the elimination of lymphatic filariasis and onchocerciasis. This poses significant challenges for elimination programmes and alternative interventions are required in L...
April 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28376112/geostatistical-modelling-of-malaria-indicator-survey-data-to-assess-the-effects-of-interventions-on-the-geographical-distribution-of-malaria-prevalence-in-children-less-than-5-years-in-uganda
#9
Julius Ssempiira, Betty Nambuusi, John Kissa, Bosco Agaba, Fredrick Makumbi, Simon Kasasa, Penelope Vounatsou
BACKGROUND: Malaria burden in Uganda has declined disproportionately among regions despite overall high intervention coverage across all regions. The Uganda Malaria Indicator Survey (MIS) 2014-15 was the second nationally representative survey conducted to provide estimates of malaria prevalence among children less than 5 years, and to track the progress of control interventions in the country. In this present study, 2014-15 MIS data were analysed to assess intervention effects on malaria prevalence in Uganda among children less than 5 years, assess intervention effects at regional level, and estimate geographical distribution of malaria prevalence in the country...
2017: PloS One
https://www.readbyqxmd.com/read/28369387/resurgence-of-malaria-following-discontinuation-of-indoor-residual-spraying-of-insecticide-in-a-previously-high-transmission-intensity-area-of-uganda
#10
Saned Raouf, Arthur Mpimbaza, Ruth Kigozi, Asadu Sserwanga, Denis Rubahika, Henry Katamba, Steve W Lindsay, Bryan K Kapella, Kassahun A Belay, Moses R Kamya, Sarah G Staedke, Grant Dorsey
Background: Indoor residual spraying (IRS) and long-lasting insecticidal nets (LLINs) are the primary tools for malaria prevention in Africa. It is not known whether reductions in malaria can be sustained after IRS is discontinued. The aim of this study was to assess changes in malaria morbidity in a historically high transmission area of Uganda where IRS was discontinued after a four-year period of effective control followed by a universal LLIN distribution campaign. Methods: Individual-level malaria surveillance data were collected from one outpatient department and one inpatient setting in Apac District, Uganda from July 2009 through November 2015...
March 24, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28355338/social-and-behavior-change-communication-in-the-fight-against-malaria-in-mozambique
#11
Jorge Alexandre Harrison Arroz
Long-lasting insecticide-treated nets and/or indoor residual spraying, associated with case management, are key interventions in the control of malaria in Africa. The objective of this study is to comment on the role of social and behavior change communication as a potential key intervention in the control of malaria in Mozambique. RESUMO As redes mosquiteiras impregnadas com insecticidade de longa duração e/ou pulverização intra-domiciliária, associada ao manejo de casos são intervenções-chave no controlo da malária em África...
March 23, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28352041/challenges-for-malaria-vector-control-in-sub-saharan-africa-resistance-and-behavioral-adaptations-in-anopheles-populations
#12
REVIEW
Seynabou Sougoufara, Souleymane Doucouré, Pape M Backé Sembéne, Myriam Harry, Cheikh Sokhna
Over the past decade, global malaria-related mortality has declined dramatically because of combined international actions that have defined and prioritized national and regional efforts to reduce the incidence of malaria, with the ultimate goal of eradication. Vector control strategies using insecticide-treated nets (ITNs) and indoor residual spraying (IRS) in African countries have contributed significantly to the declining incidence of malaria. However, the effectiveness of malaria control is threatened by increasing insecticide resistance and behavioral changes in Anopheles vectors...
January 2017: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/28330701/modeling-malaria-control-intervention-effect-in-kwazulu-natal-south-africa-using-intervention-time-series-analysis
#13
Osadolor Ebhuoma, Michael Gebreslasie, Lethumusa Magubane
The change of the malaria control intervention policy in South Africa (SA), re-introduction of dichlorodiphenyltrichloroethane (DDT), may be responsible for the low and sustained malaria transmission in KwaZulu-Natal (KZN). We evaluated the effect of the re-introduction of DDT on malaria in KZN and suggested practical ways the province can strengthen her already existing malaria control and elimination efforts, to achieve zero malaria transmission. We obtained confirmed monthly malaria cases in KZN from the malaria control program of KZN from 1998 to 2014...
March 18, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28329368/intermittent-preventive-treatment-with-dihydroartemisinin-piperaquine-for-the-prevention-of-malaria-among-hiv-infected-pregnant-women
#14
Paul Natureeba, Abel Kakuru, Mary Muhindo, Eric Littmann, Teddy Ochieng, John Ategeka, Catherine A Koss, Albert Plenty, Edwin D Charlebois, Tamara D Clark, Bridget Nzarubara, Miriam Nakalembe, Deborah Cohan, Gabrielle Rizzuto, Atis Muehlenbachs, Theodore Ruel, Prasanna Jagannathan, Diane V Havlir, Moses R Kamya, Grant Dorsey
Background.: Daily trimethoprim-sulfamethoxazole (TMP-SMX) and insecticide treated nets (ITNs) remain the main interventions for prevention of malaria in HIV-infected pregnant women in Africa. However, antifolate and pyrethroid resistance threaten the effectiveness of these intervention and new ones are needed. Methods.: We conducted a double-blind randomized placebo-controlled trial comparing daily TMP-SMX plus monthly dihydroartemisinin-piperaquine (DP) to daily TMP-SMX alone in HIV-infected pregnant women in an area of Uganda where indoor residual spraying of insecticide (IRS) had recently been implemented...
February 22, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28320389/age-and-geographic-patterns-of-plasmodium-falciparum-malaria-infection-in-a-representative-sample-of-children-living-in-burkitt-lymphoma-endemic-areas-of-northern-uganda
#15
Marlena Maziarz, Tobias Kinyera, Isaac Otim, Paul Kagwa, Hadijah Nabalende, Ismail D Legason, Martin D Ogwang, Samuel Kirimunda, Benjamin Emmanuel, Steven J Reynolds, Patrick Kerchan, Moses M Joloba, Andrew W Bergen, Kishor Bhatia, Ambrose O Talisuna, Robert J Biggar, James J Goedert, Ruth M Pfeiffer, Sam M Mbulaiteye
BACKGROUND: Falciparum malaria is an important risk factor for African Burkitt lymphoma (BL), but few studies have evaluated malaria patterns in healthy BL-age children in populations where both diseases are endemic. To obtain accurate current data, patterns of asymptomatic malaria were investigated in northern Uganda, where BL is endemic. METHODS: Between 2011 and 2015, 1150 apparently healthy children under 15 years old were sampled from 100 villages in northern Uganda using a stratified, multi-stage, cluster survey design...
March 20, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28291790/anaemia-among-children-in-a-drought-affected-community-in-south-central-ethiopia
#16
Taye Gari, Eskindir Loha, Wakgari Deressa, Tarekegn Solomon, Hanibale Atsbeha, Meselech Assegid, Alemayehu Hailu, Bernt Lindtjørn
INTRODUCTION: As part of a field trial (PACTR201411000882128) to provide evidence on the combined use of long-lasting insecticidal nets and indoor residual spray for malaria prevention, we measured haemoglobin values among children aged 6 to 59 months. The aim of this study was to estimate the prevalence of anaemia, and to determine the risk factors of anaemia and change in haemoglobin value in Adami Tullu district in south-central Ethiopia. METHODS: Repeated cross-sectional surveys among 2984 children in 2014 and 3128 children in 2015; and a cohort study (malaria as exposure and anaemia as outcome variable) were conducted...
2017: PloS One
https://www.readbyqxmd.com/read/28279458/elimination-of-visceral-leishmaniasis-in-the-indian-subcontinent-a-comparison-of-predictions-from-three-transmission-models
#17
Epke A Le Rutte, Lloyd A C Chapman, Luc E Coffeng, Sarah Jervis, Epco C Hasker, Shweta Dwivedi, Morchan Karthick, Aritra Das, Tanmay Mahapatra, Indrajit Chaudhuri, Marleen C Boelaert, Graham F Medley, Sridhar Srikantiah, T Deirdre Hollingsworth, Sake J de Vlas
We present three transmission models of visceral leishmaniasis (VL) in the Indian subcontinent (ISC) with structural differences regarding the disease stage that provides the main contribution to transmission, including models with a prominent role of asymptomatic infection, and fit them to recent case data from 8 endemic districts in Bihar, India. Following a geographical cross-validation of the models, we compare their predictions for achieving the WHO VL elimination targets with ongoing treatment and vector control strategies...
March 2017: Epidemics
https://www.readbyqxmd.com/read/28262811/a-new-malaria-vector-mosquito-in-south-africa
#18
Ashley Burke, Leonard Dandalo, Givemore Munhenga, Yael Dahan-Moss, Frans Mbokazi, Sifiso Ngxongo, Maureen Coetzee, Lizette Koekemoer, Basil Brooke
South Africa aims to eliminate malaria within its borders by 2018. Despite well-coordinated provincial vector control programmes that are based on indoor residual insecticide spraying, low-level residual malaria transmission continues in the low-altitude border regions of the north-eastern sector of the country. In order to identify the underlying causes of residual transmission, an enhanced vector surveillance system has been implemented at selected sites in the Mpumalanga and KwaZulu-Natal (KZN) provinces...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28254460/knowledge-attitude-and-practice-about-malaria-in-south-western-saudi-arabia-a-household-based-cross-sectional-survey
#19
Sami Khairy, Khaled Al-Surimi, Anna Ali, Hussam M Shubily, Nisreen Al Walaan, Mowafa Househ, Ashraf El-Metwally
This study aimed to assess the level of knowledge, attitudes, and practices (KAP) concerning malaria and malaria prevention among rural populations residing in the southwestern region of Saudi Arabia. This was a household-based cross-sectional survey, using structured questionnaire that was developed and distributed among households selected randomly from 19 villages (clusters) located in a southwestern region of Saudi Arabia, north of the border with Yemen. The data collected were analyzed using SPSS version 20...
February 21, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28241875/long-term-acceptability-durability-and-bio-efficacy-of-zerovector-%C3%A2-durable-lining-for-vector-control-in-papua-new-guinea
#20
Joseph J Kuadima, Lincoln Timinao, Laura Naidi, Anthony Tandrapah, Manuel W Hetzel, Cyrille Czeher, Justin Pulford
BACKGROUND: This study examined the acceptability, durability and bio-efficacy of pyrethroid-impregnated durable lining (DL) over a three-year period post-installation in residential homes across Papua New Guinea (PNG). METHODS: ZeroVector(®) ITPS had previously been installed in 40 homes across four study sites representing a cross section of malaria transmission risk and housing style. Structured questionnaires, DL visual inspections and group interviews (GIs) were completed with household heads at 12- and 36-months post-installation...
February 28, 2017: Malaria Journal
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