Entomological monitoring data driving decision-making for appropriate and sustainable malaria vector control in Côte d’Ivoire
Abstract Background Entomological surveillance provides critical information on vectors for appropriate malaria vector control and strategic decision-making. The widely documented insecticide resistance of malaria vectors in Côte d’Ivoire requires that any vector control intervention deployment be d...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2023-01-01
|
| Series: | Malaria Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12936-023-04439-z |
| _version_ | 1797952633670991872 |
|---|---|
| author | Bernard Loukou Kouassi Constant Edi Allassane Foungoye Ouattara Armand Kouassi Ekra Louise Golou Bellai Janice Gouaméné Yves Alain Kadio Kacou Jackson Koffi Ives Kouamé Armel-Hermann Obo Béké Firmain N’Dri Yokoli Constant Guy N’Guessan Gbalegba Emmanuel Tia Roseline Monsan Yapo Lucien Yao Konan Roméo N’Tamon N’Tamon Maurice Adja Akré Alphonsine Amanan Koffi Antoine Mea Tanoh Pascal Zinzindohoué Blaise Kouadio Patricia L. Yepassis-Zembrou Allison Belemvire Seth R. Irish Ndombour Gning Cissé Cecilia Flatley Joseph Chabi |
| author_facet | Bernard Loukou Kouassi Constant Edi Allassane Foungoye Ouattara Armand Kouassi Ekra Louise Golou Bellai Janice Gouaméné Yves Alain Kadio Kacou Jackson Koffi Ives Kouamé Armel-Hermann Obo Béké Firmain N’Dri Yokoli Constant Guy N’Guessan Gbalegba Emmanuel Tia Roseline Monsan Yapo Lucien Yao Konan Roméo N’Tamon N’Tamon Maurice Adja Akré Alphonsine Amanan Koffi Antoine Mea Tanoh Pascal Zinzindohoué Blaise Kouadio Patricia L. Yepassis-Zembrou Allison Belemvire Seth R. Irish Ndombour Gning Cissé Cecilia Flatley Joseph Chabi |
| author_sort | Bernard Loukou Kouassi |
| collection | DOAJ |
| description | Abstract Background Entomological surveillance provides critical information on vectors for appropriate malaria vector control and strategic decision-making. The widely documented insecticide resistance of malaria vectors in Côte d’Ivoire requires that any vector control intervention deployment be driven by entomological data to optimize its effectiveness and appropriate resource allocations. To achieve this goal, this study documents the results of monthly vector surveillance and insecticide susceptibility tests conducted in 2019 and a review of all previous entomological monitoring data used to guide vector control decision making. Furthermore, susceptibility to pirimiphos-methyl and clothianidin was assessed in addition to chlorfenapyr and pyrethroids (intensity and piperonyl butoxide (PBO) synergism) tests previously reported. Vector bionomic data were conducted monthly in four sites (Sakassou, Béoumi, Dabakala and Nassian) that were selected based on their reported high malaria incidence. Adult mosquitoes were collected using human landing catches (HLCs), pyrethrum spray catches (PSCs), and human-baited CDC light traps to assess vector density, behaviour, species composition and sporozoite infectivity. Results Pirimiphos-methyl and clothianidin susceptibility was observed in 8 and 10 sites, respectively, while previous data reported chlorfenapyr (200 µg/bottle) susceptibility in 13 of the sites, high pyrethroid resistance intensity and increased mortality with PBO pre-exposure at all 17 tested sites. Anopheles gambiae sensu lato was the predominant malaria vector collected in all four bionomic sites. Vector density was relatively higher in Sakassou throughout the year with mean biting rates of 278.2 bites per person per night (b/p/n) compared to Béoumi, Dabakala and Nassian (mean of 48.5, 81.4 and 26.6 b/p/n, respectively). The mean entomological inoculation rate (EIR) was 4.44 infective bites per person per night (ib/p/n) in Sakassou, 0.34 ib/p/n in Beoumi, 1.17 ib/p/n in Dabakala and 1.02 ib/p/n in Nassian. The highest EIRs were recorded in October in Béoumi (1.71 ib/p/n) and Nassian (3.22 ib/p/n), in July in Dabakala (4.46 ib/p/n) and in May in Sakassou (15.6 ib/p/n). Conclusion Based on all results and data review, the National Malaria Control Programme developed and implemented a stratified insecticide-treated net (ITN) mass distribution in 2021 considering new generation ITNs. These results also supported the selection of clothianidin-based products and an optimal spraying time for the first indoor residual spraying (IRS) campaign in Sakassou and Nassian in 2020. |
| first_indexed | 2024-04-10T22:50:36Z |
| format | Article |
| id | doaj.art-8d3f85264fb04ae6a8b3c926a854ce1c |
| institution | Directory Open Access Journal |
| issn | 1475-2875 |
| language | English |
| last_indexed | 2024-04-10T22:50:36Z |
| publishDate | 2023-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Malaria Journal |
| spelling | doaj.art-8d3f85264fb04ae6a8b3c926a854ce1c2023-01-15T12:04:56ZengBMCMalaria Journal1475-28752023-01-0122111510.1186/s12936-023-04439-zEntomological monitoring data driving decision-making for appropriate and sustainable malaria vector control in Côte d’IvoireBernard Loukou Kouassi0Constant Edi1Allassane Foungoye Ouattara2Armand Kouassi Ekra3Louise Golou Bellai4Janice Gouaméné5Yves Alain Kadio Kacou6Jackson Koffi Ives Kouamé7Armel-Hermann Obo Béké8Firmain N’Dri Yokoli9Constant Guy N’Guessan Gbalegba10Emmanuel Tia11Roseline Monsan Yapo12Lucien Yao Konan13Roméo N’Tamon N’Tamon14Maurice Adja Akré15Alphonsine Amanan Koffi16Antoine Mea Tanoh17Pascal Zinzindohoué18Blaise Kouadio19Patricia L. Yepassis-Zembrou20Allison Belemvire21Seth R. Irish22Ndombour Gning Cissé23Cecilia Flatley24Joseph Chabi25PMI VectorLink projectSwiss Centre of Scientific Research in Côte d’IvoireSwiss Centre of Scientific Research in Côte d’IvoireSwiss Centre of Scientific Research in Côte d’IvoireSwiss Centre of Scientific Research in Côte d’IvoireSwiss Centre of Scientific Research in Côte d’IvoireSwiss Centre of Scientific Research in Côte d’IvoireSwiss Centre of Scientific Research in Côte d’IvoireSwiss Centre of Scientific Research in Côte d’IvoireSwiss Centre of Scientific Research in Côte d’IvoirePMI VectorLink projectCentre of Veterinary and Medical EntomologyCentre of Veterinary and Medical EntomologyNational Institute of Public HygieneNational Institute of Public HygieneNational Institute of Public Health/Pierre Richet InstituteNational Institute of Public Health/Pierre Richet InstituteNational Malaria Control ProgrammeU.S. President’s Malaria Initiative, USAIDU.S. President’s Malaria Initiative, USAIDU.S. President’s Malaria Initiative, Centers for Disease Control and Prevention (CDC)U.S. President’s Malaria Initiative, USAIDU.S. President’s Malaria Initiative, Entomology Branch, U.S. Centers for Disease Control and Prevention (CDC)PMI VectorLink projectPMI VectorLink ProjectPMI VectorLink ProjectAbstract Background Entomological surveillance provides critical information on vectors for appropriate malaria vector control and strategic decision-making. The widely documented insecticide resistance of malaria vectors in Côte d’Ivoire requires that any vector control intervention deployment be driven by entomological data to optimize its effectiveness and appropriate resource allocations. To achieve this goal, this study documents the results of monthly vector surveillance and insecticide susceptibility tests conducted in 2019 and a review of all previous entomological monitoring data used to guide vector control decision making. Furthermore, susceptibility to pirimiphos-methyl and clothianidin was assessed in addition to chlorfenapyr and pyrethroids (intensity and piperonyl butoxide (PBO) synergism) tests previously reported. Vector bionomic data were conducted monthly in four sites (Sakassou, Béoumi, Dabakala and Nassian) that were selected based on their reported high malaria incidence. Adult mosquitoes were collected using human landing catches (HLCs), pyrethrum spray catches (PSCs), and human-baited CDC light traps to assess vector density, behaviour, species composition and sporozoite infectivity. Results Pirimiphos-methyl and clothianidin susceptibility was observed in 8 and 10 sites, respectively, while previous data reported chlorfenapyr (200 µg/bottle) susceptibility in 13 of the sites, high pyrethroid resistance intensity and increased mortality with PBO pre-exposure at all 17 tested sites. Anopheles gambiae sensu lato was the predominant malaria vector collected in all four bionomic sites. Vector density was relatively higher in Sakassou throughout the year with mean biting rates of 278.2 bites per person per night (b/p/n) compared to Béoumi, Dabakala and Nassian (mean of 48.5, 81.4 and 26.6 b/p/n, respectively). The mean entomological inoculation rate (EIR) was 4.44 infective bites per person per night (ib/p/n) in Sakassou, 0.34 ib/p/n in Beoumi, 1.17 ib/p/n in Dabakala and 1.02 ib/p/n in Nassian. The highest EIRs were recorded in October in Béoumi (1.71 ib/p/n) and Nassian (3.22 ib/p/n), in July in Dabakala (4.46 ib/p/n) and in May in Sakassou (15.6 ib/p/n). Conclusion Based on all results and data review, the National Malaria Control Programme developed and implemented a stratified insecticide-treated net (ITN) mass distribution in 2021 considering new generation ITNs. These results also supported the selection of clothianidin-based products and an optimal spraying time for the first indoor residual spraying (IRS) campaign in Sakassou and Nassian in 2020.https://doi.org/10.1186/s12936-023-04439-zMalariaAnopheles gambiaeInsecticide resistance monitoringVector bionomicsITNsIRS |
| spellingShingle | Bernard Loukou Kouassi Constant Edi Allassane Foungoye Ouattara Armand Kouassi Ekra Louise Golou Bellai Janice Gouaméné Yves Alain Kadio Kacou Jackson Koffi Ives Kouamé Armel-Hermann Obo Béké Firmain N’Dri Yokoli Constant Guy N’Guessan Gbalegba Emmanuel Tia Roseline Monsan Yapo Lucien Yao Konan Roméo N’Tamon N’Tamon Maurice Adja Akré Alphonsine Amanan Koffi Antoine Mea Tanoh Pascal Zinzindohoué Blaise Kouadio Patricia L. Yepassis-Zembrou Allison Belemvire Seth R. Irish Ndombour Gning Cissé Cecilia Flatley Joseph Chabi Entomological monitoring data driving decision-making for appropriate and sustainable malaria vector control in Côte d’Ivoire Malaria Journal Malaria Anopheles gambiae Insecticide resistance monitoring Vector bionomics ITNs IRS |
| title | Entomological monitoring data driving decision-making for appropriate and sustainable malaria vector control in Côte d’Ivoire |
| title_full | Entomological monitoring data driving decision-making for appropriate and sustainable malaria vector control in Côte d’Ivoire |
| title_fullStr | Entomological monitoring data driving decision-making for appropriate and sustainable malaria vector control in Côte d’Ivoire |
| title_full_unstemmed | Entomological monitoring data driving decision-making for appropriate and sustainable malaria vector control in Côte d’Ivoire |
| title_short | Entomological monitoring data driving decision-making for appropriate and sustainable malaria vector control in Côte d’Ivoire |
| title_sort | entomological monitoring data driving decision making for appropriate and sustainable malaria vector control in cote d ivoire |
| topic | Malaria Anopheles gambiae Insecticide resistance monitoring Vector bionomics ITNs IRS |
| url | https://doi.org/10.1186/s12936-023-04439-z |
| work_keys_str_mv | AT bernardloukoukouassi entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT constantedi entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT allassanefoungoyeouattara entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT armandkouassiekra entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT louisegoloubellai entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT janicegouamene entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT yvesalainkadiokacou entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT jacksonkoffiiveskouame entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT armelhermannobobeke entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT firmainndriyokoli entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT constantguynguessangbalegba entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT emmanueltia entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT roselinemonsanyapo entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT lucienyaokonan entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT romeontamonntamon entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT mauriceadjaakre entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT alphonsineamanankoffi entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT antoinemeatanoh entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT pascalzinzindohoue entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT blaisekouadio entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT patricialyepassiszembrou entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT allisonbelemvire entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT sethrirish entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT ndombourgningcisse entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT ceciliaflatley entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire AT josephchabi entomologicalmonitoringdatadrivingdecisionmakingforappropriateandsustainablemalariavectorcontrolincotedivoire |