Biology of two larval morphological phenotypes ofAedes aegyptiin Abidjan, Côte d'Ivoire

2017 ◽  
Vol 108 (4) ◽  
pp. 540-546
Author(s):  
N. Guindo-Coulibaly ◽  
N.R. Diakite ◽  
A.M. Adja ◽  
J.T. Coulibaly ◽  
K.F. Bassa ◽  
...  
Keyword(s):  
Life Cycle ◽  
Yellow Fever ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Control Strategies ◽  
Economic Capital ◽  
Biological Parameters ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
The City

AbstractSince 2008, several outbreaks of yellow fever and dengue occurred in Abidjan, the economic capital of Côte d'Ivoire. A better knowledge of the biology ofAedes aegyptipopulations, the main vector of yellow fever and dengue viruses, is necessary to tailor vector control strategies implemented in the city. This study was designed to determine some biological parameters, occurring during the life cycle of two morphological phenotypes ofAe. aegyptilarvae. Mosquitoes were sampled in a suburb of Abidjan (Treichville) using the WHO layer-traps technique. Biological parameters were studied in laboratory under standard conditions of temperature (27°C ± 2°C) and relative humidity (80% ± 10%). Our results indicated that the mean eggs laid by females from ‘brown larvae’ (BL) (85.95, 95% confidence interval (CI 95%) 78.87–93.02) was higher than those from ‘white larvae’ (WL) (64.40%, CI 95% 55.27–73.54). The gonotrophic cycle was 3 and 4 days in females from BL and WL, respectively. The overall yield of breeding mosquitoes from BL (63.88%, CI 95% 62.61–65.14) was higher compared with those of mosquitoes from WL (59.73%, CI 95% 58.35–61.12). The sex ratio (male/female) was 0.95 and 1.68 inAe. aegyptipopulations from BL and WL, respectively. Females from BL lived slightly longer than those from WL (t= −2.332;P= 0.021). This study shows thatAe. Aegyptipopulations from BL and WL present different biological parameters during their life cycle. This could have an implication on their ability to transmit human disease viruses such as dengue and yellow fever. Further molecular studies are needed to determine genetic divergence between theseAe. aegyptipopulations.

Insecticide Resistance Patterns and Mechanisms in Aedes aegypti (Diptera: Culicidae) Populations Across Abidjan, Côte d’Ivoire Reveal Emergent Pyrethroid Resistance

2021 ◽  
Author(s):  
Lucien Yao Konan ◽  
Welbeck Achille Oumbouke ◽  
Urbain Garhapié Silué ◽  
Ibrahima Zanakoungo Coulibaly ◽  
Jean-Claude Tokou Ziogba ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Pyrethroid Resistance ◽  
Population Based ◽  
Cote D’Ivoire ◽  
Low Frequencies ◽  
Larval Habitats ◽  
Côte D'ivoire ◽  
The City

Abstract From 2008 to 2017, the city of Abidjan, Côte d’Ivoire experienced several Aedes-borne disease epidemics which required control of the vector mosquito population based on the reduction of larval habitats and insecticidal sprays for adult mosquitoes. This study was undertaken to assess the insecticide susceptibility status of Aedes aegypti (Linnaeus) in the city of Abidjan. Immature Ae. aegypti were sampled from several larval habitats within seven communes of Abidjan and reared to adults. Three to five days old F1 emerged adults were tested for susceptibility using insecticide-impregnated papers and the synergist piperonyl butoxide (PBO) following WHO bioassay guidelines. The results showed that Ae. aegypti populations from Abidjan were resistant to 0.1% propoxur, and 1% fenitrothion, with mortality rates ranging from 0% to 54.2%. Reduced susceptibility (93.4–97.5% mortality) was observed to 0.05% deltamethrin, 0.75% permethrin, 0.05% lambda-cyhalothrin, 5% malathion, and 0.8% chlorpyrifos-methyl. This reduced susceptibility varied depending on the insecticide and the collection site. The restoration of mortality when the mosquitoes were pre-exposed to the synergist PBO suggests that increased activity of oxidases could be contributing to resistance. Three kdr mutations (V410L, V1016I, and F1534C) were present in populations tested, with low frequencies for the Leu410 (0.28) and Ile1016 (0.32) alleles and high frequencies for the Cys1534 allele (0.96). These findings will be used to inform future arbovirus vector control activities in Abidjan.

Combining multi-criteria decision analysis with GIS approaches for decentralized organic wastes composting plants site selection in Tiassalé, Southern Côte d’Ivoire

2021 ◽  
pp. 0734242X2110381
Author(s):  
Dotanhan Yeo ◽  
Kouassi Dongo ◽  
Eliachie Larissa Eméline Angoua ◽  
Adeline Mertenat ◽  
Phillipp Lüssenhop ◽  
...  
Keyword(s):  
Decision Analysis ◽  
Cote D'ivoire ◽  
Site Selection ◽  
Côte D’Ivoire ◽  
Geographical Information ◽  
Basic Field ◽  
Cote D’Ivoire ◽  
Multi Criteria Decision Analysis ◽  
Côte D'ivoire ◽  
The City

In recent years, decentralized composting appeared as one of the most appropriate treatment options for organic waste valorization in low- and middle-income countries. In Cote d’Ivoire, a pilot project has proved the feasibility of organic municipal solid waste composting for the city of Tiassalé. However, numerous issues still need to be addressed for the establishment of a sustainable decentralized composting system in this city. One of the key issues is site selection. Until now, there is no clear model for such plant site selection. In this study, multi-criteria decision analysis (MCDA) and geographical information system (GIS) approaches were combined to develop an appropriate model for selecting decentralized composting sites in the city of Tiassalé. The methodology used involved two different and complementary phases. First, MCDA and GIS techniques were used to identify the most suitable site areas. Seven criteria clustered in three main factors (environmental, social and economic), and five constraints were considered in the analysis process. Second, five sites were selected within the most suitable areas after a basic field visit and ranked using the Analytic Hierarchy Process. The results showed that the most suitable spaces for decentralized composting plant siting represent only 2.6% of the study area. The investigation yielded on the selection of the two best options for decentralized composting plant siting for the city of Tiassalé. This study proved that the combination of MCDA and GIS is a practical and efficient method to identify suitable sites for decentralized composting plants.

Assessment of Trace Elements in Bissap (Hibiscus sabdariffa) Sold in the City of Abidjan in Côte d’Ivoire

2017 ◽  
Vol 05 (03) ◽  
Author(s):  
M’boh Gervais Melaine ◽  
N guessan Ismael Gbabia Zie ◽  
Ackah Jacques Auguste Alfred Bognan ◽  
Konan Kouassi Martin ◽  
Djaman Allico Joseph
Keyword(s):  
Trace Elements ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Hibiscus Sabdariffa ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
The City

scholarly journals Asymptomatic malaria: building bridges with communities through patients in Côte d’Ivoire

2019 ◽  
Vol 29 (Supplement_4) ◽  
Author(s):  
A Hounsa ◽  
D Yao ◽  
A R Attia ◽  
M Gokpéya ◽  
K J Sackou ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Control Strategies ◽  
Clinical Signs ◽  
Domestic Animals ◽  
Asymptomatic Malaria ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Household Members

Abstract Background In malaria-endemic areas, asymptomatic carriers are a reservoir of parasites that contribue to the persistence of malaria transmission. In Côte d’Ivoire, this situation is poorly documented. The objective of our study was to assess the frequency and socio-environmental factors associated with asymptomatic malaria in the town of Assuefry, located in the northeast of Côte d’Ivoire, a region where malaria prevalence remains high. Methods A cross-sectional study in two stages was conducted from October to December 2018, first at the Urban Health Center (UHC) in Assuefry and then in the households. The sample size calculated for patients was 162 extrapolated to 201 people. All persons received at the CSU who had clinical symptoms of malaria and a positive Rapid Diagnostic Test (RDT) were included. In the households of these index subjects, a follow-up survey allowed active RDT screening for malaria among all household members with no clinical signs of malaria. The socio-environmental factors taken into account were: the area of residence (urban or peri-urban), domestic animals husbandry, water storage at home, nearby garbage dump, wastewater collection and disposal system, type of housing and number of people in the household. Results The frequency of asymptomatic malaria was 341 (38.8%) out of 879 household members visited. Both female and male gender was concerned (51% vs. 49%). The 5 to 25 years old group concentrated nearly 82% of all cases. Only domestic animals husbandry was associated with asymptomatic malaria at the household level (p = 0.021). Conclusions The high frequency of asymptomatic malaria found in this study is a challenge for the National Malaria Control Program in Côte d’Ivoire. This should be taken into account while organizing control strategies. Key messages The frequency of asymptomatic malaria in Côte d’Ivoire is high. Control strategies must take into account in the guidelines the challenges of detecting and treating asymptomatic malaria. For the judicious use of antimalarial drugs, any subject with a positive RDT without clinical signs of malaria should receive a ‘Drop - Thick’ before treatment.

scholarly journals Factors Influencing the Transborder Transmission of Brucellosis in Cattle Between Côte d'Ivoire and Mali: Evidence From Literature and Current Key Stakeholders

2021 ◽  
Vol 8 ◽  
Author(s):  
Wilfried Délé Oyetola ◽  
Kanny Diallo ◽  
Katharina Kreppel ◽  
Philippe Soumahoro Kone ◽  
Esther Schelling ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Control Strategies ◽  
Regional Scale ◽  
Small Ruminants ◽  
Border Control ◽  
Cote D’Ivoire ◽  
Factors Influencing ◽  
Côte D'ivoire ◽  
Key Stakeholders

Brucellosis is one of the main zoonoses affecting ruminants. Cattle and small ruminants are involved in transhumance and trade between Côte d'Ivoire and Mali. The endemic nature of the disease in both countries, connected through transhumance, poses unique challenges and requires more information to facilitate disease surveillance and the development of integrated control strategies. This study aimed to assess the main factors influencing the historical and current transborder transmission of brucellosis between Côte d'Ivoire and Mali. A literature review was conducted and data collection was performed through a participatory, transdisciplinary process by holding focus group discussions and interviews with key stakeholders. Cattle breeders, herdsmen, professionals of animal and human health, border control agents and experts took part. The data was analyzed to generate essential new knowledge for transborder brucellosis transmission factors and control strategies. From the literature, the seroprevalence of brucellosis in both countries varied from 11% (1987) to 20% (2013) and 15% (1972–1973) to 5% (2012–2014) in Mali and Côte d'Ivoire, respectively. The reduction of seroprevalence in Côte d'Ivoire was the result of the annual vaccination campaigns which lowered it from 28% (1978) to 14% (1984) after an increase due to livestock policy implemented in 1976. The meta-analysis and interviews jointly showed that the cross-border mobility was associated with the livestock development policy in Côte d'Ivoire as well as the ECOWAS act on the free movement of people and goods. This act supported the seasonal transhumance of livestock for access to pasture land in southern humid zones in Côte d'Ivoire. The seasonal mobility for grazing and trade was the main risk factor for the spread of brucellosis between pastoral zones of both countries. The existing legal health framework and border control mechanism do not achieve transborder surveillance to control brucellosis. Existing sanitary regulations should be adapted at regional scale to integrate a joint surveillance of high priority zoonotic diseases like brucellosis at border controls.

scholarly journals Les Déterminants De L’accès Aux Services De Santé À Grand Bassam

2018 ◽  
Vol 14 (6) ◽  
pp. 124
Author(s):  
Maï Gilles-Harold Wilfried ◽  
Aloko-N’guessan Jérôme ◽  
Essan Kodia Valentin
Keyword(s):  
Health Care ◽  
Health Services ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Cost Of Care ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Access To Health ◽  
Wide Range ◽  
The City

State of complete physical, mental and social well-being, health is fundamental for man. Yet global figures for access to health are alarming. According to Gijs (2011) 2.5 billion people in the world do not have access to basic health care. In Côte d'Ivoire, the State has made population access a priority. Thus, sanitary infrastructures were built and equipped (PNDS, 2016). However, the problem of access to health services remains. The city of GrandBassam, located in the south-east of Côte d'Ivoire, has a wide range of health structures. Yet there are still people who still do not have access to health care. According to the RASS (2015), 25% of the population of Grand-Bassam still does not use health services. The purpose of this article is to identify the determinants of the access of the population of Grand-Bassam to health services. The methodological approach adopted to conduct this study took into account a bibliographic synthesis and the administration of a questionnaire. This study shows that perception of distance, income of head of household, perception of cost of care, household size, educational level, and age of households are the factors that determine access health services in the city of Grand-Bassam.

scholarly journals Urban agriculture in the city of Daloa, Central-West Côte d'Ivoire: Crop species, market practices and economic fallout

2020 ◽  
Vol 1 (1) ◽  
pp. 026-034
Author(s):  
Amon Anoh Denis-Esdras ◽  
Konan Kouadio Ezéchiel ◽  
Kouadio N’da Kouamé Cyriac ◽  
Soro Kafana ◽  
Seguena Fofana ◽  
...  
Keyword(s):  
Urban Agriculture ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Leafy Vegetables ◽  
Crop Species ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Market Gardening ◽  
Market Practices ◽  
The City

In Côte d'Ivoire, urban agriculture is expanding in several cities due to its proximity to consumers and its financial benefits. In the city of Daloa, several plant species are cultivated as food crops in market gardens. A survey based on semi-structured interviews was carried out among 19 people at 8 market gardening sites. This sector is controlled by functional illiterate persons who are more than 5 years’ experience. Eleven species included in 9 genera and 8 families and grouped into 5 types of vegetables were recorded. Carrot, Cabbage, Courgette, Spinach, Green Bean, Parsley, Lettuce and Tomato were the most grown vegetable. The most represented families were Apiaceae, Asteraceae and Liliaceae. Leafy vegetables (lettuce, cabbage, parsley) were the most grown. Market gardening generates monthly incomes depending on actor, species, and seasons. Thus, this sector provides an important source of income for local populations and deserves support from authorities.

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