First detection of the malaria vector Anopheles arabiensis in Côte d'Ivoire: urbanization in question.

BACKGROUND: Previous studies have revealed high malaria transmission in Bouaké, Côte d'Ivoire. The sociopolitical crisis in the country and the resulting environmental changes have raised the need to update existing knowledge on mosquito vector species and malaria transmission. METHODS: Adult mosquitoes were caught using the human landing catch (HLC) sampling method in Bouaké. They were collected in six districts representative of the diversity in urban landscapes. Sampling points were selected along the water network crossing the city and monitored from 2020 to 2021 to detect the presence of anopheline larvae. PCR techniques were used to ascertain the species of the Anopheles gambiae complex, Plasmodium falciparum sporozoite infection in a subset of Anopheles vectors, and insecticide resistance mechanisms in Anopheles arabiensis only. RESULTS: A total of 4599 Anopheles mosquitoes were collected and then identified. Anopheles gambiae sensu lato (s.l.) made up the majority of the whole collection (99%) while Anopheles funestus (0.7%), Anopheles ziemanni (0.2%), Anopheles pharoensis (0.2%) represented the remaining proportion of collection. Among the Anopheles gambiae complex, three species were identified namely An. gambiae sensu stricto (45.9%), Anopheles coluzzii (52.2%), and Anopheles arabiensis (1.9%). The first two species had already been collected in Bouaké, however this is the first time that An. arabiensis is reported in Côte d'Ivoire. Anopheles arabiensis was also collected during the larval surveys in a similar proportion (1.1%) in the same areas as the adults. CONCLUSIONS: This study detected the presence of An. arabiensis for the first time in Côte d'Ivoire. This species was found quite far from its usual geographic area and its expansion could be linked to the urbanization process. Although no An. arabiensis was found to be infected by Plasmodium sp., its role in malaria transmission in Bouaké has to be explored, particularly since its exophagic behaviour raises the issue of control measures and the use of insecticide-impregnated nets. The spread of this species in Côte d'Ivoire should be assessed through further research in additional towns in the country.

[ECHOGRAPHIC Appearance Of Left Inguinal Hernia Of The Bladder: About A Bouake Case]. / Aspect ECHOGRAPHIQUE De La Hernie Inguinale Gauche De La Vessie : A Propos d'Un Cas Bouake.

Inguinal hernia is one of the most frequent pathologies in surgery and is defined by the passage of abdominal or pelvic contents through the inguinal orifice [1]. However, an inguinal hernia is said to be of the bladder when the contents involve the bladder [2]. It is rare and most often discovered intraoperatively [3]. We report a case of left inguinal bladder hernia diagnosed by ultrasound. This was a 74-year-old patient who consulted for dysuria associated with bilateral inguino-scrotal swelling. A vesico-prostatic ultrasound was performed using a Samsung ultrasound scanner equipped with high and low frequency probes and a pulsed and color Doppler mode. At the end of this examination, the diagnosis of a left inguinal hernia of the bladder was made.

La hernie inguinale est l'une des pathologies les plus fréquentes en chirurgie et se définit par le passage du contenu abdominal ou pelvien à travers l'orifice inguinal [1]. Cependant la hernie inguinale est dite de la vessie lorsque le contenu intéresse la vessie [2]. Elle est rare et découverte le plus souvent en per-opératoire [3]. Nous rapportons un cas de hernie inguinale gauche de la vessie dont le diagnostic a été posé à l'échographie. Il s'agissait d'un patient de 74 ans qui a consulté pour une dysurie associée à une tuméfaction inguino-scrotale bilatérale. Une échographie vésico-prostatique a été réalisée à l'aide d'un échographe de marque Samsung doté de sondes haute et basse fréquence et un mode Doppler pulsé et couleur. À l'issue de cet examen le diagnostic d'une hernie inguinale gauche de la vessie a été posé.

ETIOLOGIES OF INFECTIONS IN DIABETIC PATIENTS HOSPITALIZED AT BOUAKE UNIVERTY TEACHING HOSPITAL, CÔTE D'IVOIRE.

Background: Diabetic infections are frequent and the etiologies are multiple. The present study aims to identify the etiologies of the infections of the diabetic patient hospitalized in the University Teaching Hospital of Bouake in Côte d'Ivoire. Materials and Methods: This was a retrospective cross-sectional study conducted in the Internal Medicine Department from January 2019 to December 2020. The study population consisted of hospitalized and infected diabetic patients. Of this study population we included in the study 136 patients. Data analysis was done with Epi Info 7.2.3.1 software. Results: The prevalence of infection in hospitalized diabetics was 75.1%. The mean age of the patients was 52 ± 13.4 years. The sex ratio was 0.7. Diabetes was incidentally discovered in 50% and type 2 diabetes (88.2%) predominated. The reasons for hospitalization were dominated by ketoacidosis (58.1%), glycemic imbalance (19.1%) and hyperosmolar hyperglycemia syndrome (10.3%). Fever was present in 41.2% of cases. The infectious foci were urinary tract infections (29.4%), pneumopathies (28.7%), malaria (21.3%), skin infections (13.2%) and the undetermined focus (7.3%). The infectious focus was unique in 90.4%. The germs identified were plasmodium (21.3%), Escherichia coli (8.8%), staphylococcus (8.3%), yeasts (8.3%) and Enterobacter (6.7%). Beta-lactams (75.6%) were the most prescribed anti-infective treatment. Mortality was 14.7% related to type 1 diabetes (p=0.001), duration of diabetes greater than 5 years (p=0.005), hospitalization latency greater than 7 days (p=0.001), mucocutaneous focus (p=0.005) and Undetermined foci (p=0.001). Conclusion: Diabetic infections are frequent and the etiologies are varied. They must be systematically sought in hospitalized diabetics.

Efficacy of a 'lethal house lure' against Culex quinquefasciatus from Bouaké city, Côte d'Ivoire.

BACKGROUND: Eave tube technology is a novel method of insecticide application that uses an electrostatic coating system to boost insecticide efficacy against resistant mosquitoes. A series of previous experiments showed encouraging insecticidal effects against malaria vectors. This study was undertaken to assess the effects of the eave tube approach on other Culicidae, in particular Culex quinquefasciatus, under laboratory and semi-field conditions. METHODS: Larvae of Cx. quinquefasciatus from Bouaké were collected and reared to adult stage, and World Health Organization (WHO) cylinder tests were performed to determine their resistance status. WHO standard 3-min cone bioassays were conducted using PermaNet 2.0 netting versus eave tube-treated inserts. To assess the transient exposure effect on Cx. quinquefasciatus, eave tube assay utilizing smelly socks as attractant was performed with exposure time of 30 s, 1 min, and 2 min on 10% beta-cyfluthrin-treated inserts. Residual activity of these treated inserts was then monitored over 9 months. Field tests involving release-recapture of Cx. quinquefasciatus within enclosures around experimental huts fitted with windows and untreated or insecticide-treated eave tubes were conducted to determine house entry preference and the impact of tubes on the survival of this species. RESULTS: Bouaké Cx. quinquefasciatus displayed high resistance to three out of four classes of insecticides currently used in public health. After 3 min of exposure in cone tests, 10% beta-cyfluthrin-treated inserts induced 100% mortality in Cx. quinquefasciatus, whereas the long-lasting insecticidal net (LLIN) only killed 4.5%. With reduced exposure time on the eave tube insert, mortality was still 100% after 2 min, 88% after 1 min, and 44% after 30 s. Mortality following 1 h exposure on 10% beta-cyfluthrin-treated insert was > 80% continuously up to 7 months post-treatment. Data suggest that Cx. quinquefasciatus have a stronger preference for entering a house through the eaves than through windows. Beta-cyfluthrin-treated inserts were able to kill 51% of resistant Cx. quinquefasciatus released within the enclosure. CONCLUSIONS: Eave tubes are a novel method for delivery of insecticide to the house. They attract nuisance host-seeking Cx. quinquefasciatus mosquitoes and are as effective in controlling them as they are against pyrethroid-resistant Anopheles gambiae, despite the high level of resistance Cx. quinquefasciatus have developed.

[Isolated Fractures Of The Mandible In Children: Epidemiological, Clinical And Therapeutic Aspects]. / Les Fractures Isolees De La Mandibule Chez L'Enfant Au Centre Hospitalier Universitaire De Bouake : Aspects Epidemiologiques, Cliniques Et Therapeutiques.

INTRODUCTION: Facial fractures are rare in the pediatric population compared to adults. They represent 1 to 15% of maxilla-facial trauma. The objective of this study was to describe the epidemiological, clinical and therapeutic characteristics of mandible fractures in children in a developing country. MATERIAL AND METHODS: This was a retrospective descriptive cross-sectional study - from January 1, 2016 to June 31, 2020 involving 17 cases. It took place in the Department of Odonto-Stomatology and Maxillofacial Surgery of the Hospital and University Center (CHU) of Bouaké. RESULTS: There were 14 boys (82.35%) and 3 girls (17.65%) i.e. a sex ratio of 4.66. Road traffic accidents were the main cause with 64.72% (n=11). Unifocal fractures were found in 14 patients (82.35%). The seat was parasymphyseal in 29.41% (n=5). Bifocal fractures were found in 3 patients (17.65%). The site was condylar and symphyseal in 2 patients (75%). It involved the symphysis and the horizontal branch in 1 patient (25%). Orthopedic treatment was performed in all patients (100%). The evolution was favorable in all patients, i.e. 100% of cases. CONCLUSION: The fracture of the mandible in children is a traumatological entity which is an epidemiological and therapeutic particularity.

INTRODUCTION: Les fractures de la face sont rares dans la population pédiatrique par rapport aux adultes. Elles représentent 1 à 15% des traumatismes maxillo-faciaux. L'objectif de cette étude était de décrire les caractéristiques épidémiologiques, cliniques et thérapeutiques des fractures de la mandibule chez l'enfant dans un pays en voie de développement. MATÉRIEL ET MÉTHODES: Il s'agissait d'une étude transversale descriptive rétrospective - allant du 1er Janvier 2016 au 31 Juin 2020 portant sur 17 cas. Elle s'est déroulée dans le service d'Odonto-Stomatologie et de Chirurgie Maxillo Faciale du Centre Hospitalier et Universitaire (CHU) de Bouaké. RÉSULTATS: Il y avait 14 Garçons (82,35%) et 3 filles (17,65%) soit un sex ratio de 4,66. Les accidents de la circulation routière étaient la principale cause avec 64,72% (n=11). Les fractures uni focales étaient retrouvées chez 14 patients (82,35%). Le siège était para-symphysaire dans 29,41% (n=5). Les fractures bifocales étaient retrouvées chez 3 patients (17,65%). Le siège était condylien et symphysaire chez 2 patients (75%). Elle intéressait la symphyse et la branche horizontale chez 1 patient (25%). Le traitement orthopédique a été réalisé chez tous les patients (100%). L'évolution a été favorable chez tous les patients soit 100% des cas. CONCLUSION: La fracture de la mandibule chez l'enfant est une entité traumatologique qui relève d'une particularité épidémiologique et thérapeutique.

Effectiveness and sustainability of the WHO multimodal hand hygiene improvement strategy in the University Hospital Bouaké, Republic of Côte d'Ivoire in the context of the COVID-19 pandemic.

INTRODUCTION: The most frequent adverse events in healthcare are healthcare-associated infections, whose burden is highest in resource-limited settings. In addition, low resource settings often lack Hand Hygiene (HH) knowledge and reliable supply to disinfectant, a necessity emphasized by the past West African Ebola Epidemic and the ongoing COVID-19 pandemic. PASQUALE aims to increase patient safety by introducing the WHO multimodal HH strategy in the University Hospital Bouaké, Côte d'Ivoire. METHODS: Assessment of HH knowledge, perception and compliance was performed 12 months before, right after the intervention and at a ten months interval using questionnaires for knowledge and perception and direct observation for compliance. The intervention consisted of a HH training and the introduction of local production of alcohol-based hand-rub. In the absence of a control group, the effectiveness of the intervention was assessed by a before-and-after study. RESULTS: Baseline knowledge score was 14/25, increased significantly to 17/25 (p < 0.001) upon first and decreased to 13/25 in second follow-up. Compliance showed a significant increase from 12.7% to 36.8% (p < 0.001) in first and remained at 36.4% in second follow-up. Alcohol-based hand-rub production and consumption almost doubled after first confirmed COVID-19 case in Côte d'Ivoire. CONCLUSION: The WHO HH improvement strategy is an effective and pandemic-adaptable method to increase long-term HH compliance. This study emphasizes that the implementation of the strategy to build a robust system is of utmost importance.

Role of Anopheles gambiae s.s. and Anopheles coluzzii (Diptera: Culicidae) in Human Malaria Transmission in Rural Areas of Bouaké, in Côte d'Ivoire.

Studies done in Bouaké (Côte d'Ivoire) about 20-yr ago reported that Anopheles gambiae s.l. Giles was the major malaria vector. The present study aimed to update these data and to identify the main vectors. Mosquitoes were collected in Allokokro and Petessou villages between June 2014 and December 2015 using the human landing catching method. Potential breeding sites of An. gambiae s.l. were identified in August and October 2014 and mapped using GPS. Anopheles species were morphologically and molecularly [polymerase chain reaction (PCR)] identified. Ovaries of female were dissected to determine the parity and infection with Plasmodium was detected in head and thorax by quantitative PCR. In Allokokro, the biting rate of An. gambiae s.s was significantly greater than Anopheles coluzzii, whereas, in Petessou, biting rates of both species were comparable. Plasmodium falciparum (Haemosporida: Plasmodiidae), Plasmodium malariae (Haemosporida: Plasmodiidae), and Plasmodium ovale (Haemosporida: Plasmodiidae) identified in both villages. The infection rates of An. gambiae s.s. and An. coluzzii were not significantly different. The entomological inoculation rate (EIR) of An. gambiae s.s. for P. falciparum was 9-fold greater than that of An. coluzzii in Allokokro; however, in Petessou, the EIRs of both species were comparable. In both village, An. gambiae s.s was responsible for P. falciparum and P. ovale transmission whereas An. coluzzii transmitted all three Plasmodium species.

[Efficacy against Malaria Vectors of Long-Lasting Insecticide-Treated Mosquito Nets after 17 Months of Use in the City of Bouaké, in the Center of Côte d'Ivoire]. / Efficacité contre les vecteurs du paludisme de moustiquaires imprégnées d'insecticide à longue durée d'action après 17 mois d'utilisation dans la ville de Bouaké, au centre de la Côte d'Ivoire.

Malaria remains a public health problem in Côte d'Ivoire despite a 95% coverage rate with long-lasting insecticide-treated mosquito nets (LLINs) since 2015. A study was conducted in Bouaké to determine the residual efficacy of LLINs used during 17 months (N = 30) and of stored and unpacked LLINs (N = 8). The physical integrity of LLINs and their biological efficacy on populations of Anopheles gambiae (sensitive and resistant to insecticides) were assessed. The study revealed that 57% (17/30) of LLINs recovered from households have a hole. The proportional hole indices indicated that 70% (21/30) of LLINs were in good condition, 20% (6/30) were repairable and 10% (3/30) were unusable.This study also showed that the LLINs used and stored were effective on the sensitive Kisumu strain but ineffective on resistant populations of An. gambiae of Bouaké. Average knock-down and mortality rates induced by LLINs used on the populations of An. gambiae from Bouaké were 23% and 9%, respectively. The resistance of mosquitoes to insecticides and the alteration of the physil integrity of mosquito nets are probably major factors to be taken into account in estimating the efficacy of LLINs in the field.

Le paludisme demeure un problème de santé publique en Côte d'Ivoire malgré un taux de couverture en moustiquaires imprégnées à longue durée d'action (MILDA) de 95 % depuis 2015. Une étude a été menée à Bouaké afin de déterminer l'efficacité résiduelle de MILDA utilisées pendant 17 mois (n = 30) et celle de MILDA stockées et non déballées (n = 8). Pour ce faire, l'intégrité physique des MILDA et leur efficacité biologique sur des populations d'Anopheles gambiae (sensibles et résistants aux insecticides) ont été évaluées. L'étude a révélé que 57 % (17/30) des MILDA récupérées dans les ménages sont trouées et que les indices proportionnels de trous les plaçaient dans la catégorie des moustiquaires en bon état pour 70 % (21/30) d'entre elles, réparables pour 20 % (6/30) d'entre elles, inutilisables pour les 10 % (3/30) restants. Cette étude a également montré que les MILDA utilisées et stockées étaient efficaces sur la souche sensible Kisumu, mais inefficaces sur les populations résistantes d'An. gambiae de terrain. Les taux moyens de knock-down et de mortalité induits par les MILDA utilisées sur les populations d'An. gambiae de Bouaké étaient respectivement de 23 et 9 %. La résistance des moustiques aux insecticides et l'altération de l'intégrité physique des moustiquaires sont probablement des facteurs majeurs à prendre en compte dans l'estimation de l'efficacité des MILDA sur le terrain.

[Performance of the Strategy to Catch Up with Drop Out and Unvaccinated Children in Côte d'Ivoire in 2018]. / Performance de la stratégie de rattrapage des enfants perdus de vue et non vaccinés en Côte d'Ivoire en 2018.

To improve the performance of Côte-d'Ivoire's immunization program, we have implemented a strategy to catch up with drop out children (DOC) and unvaccinated children (UVC) in 14 Health Districts (HDs) with the lowest measles vaccination coverage. This article presents the effectiveness and cost of this strategy. We selected the areas with the highest numbers of DOC: 5 health areas (HAs) per HD and 5 villages/neighborhoods per HA. The strategy, which was implemented by civil society organizations, health centre managers (HCMs) and community health workers (CHWs), combined sensitization of community leaders and groups, home visits (HV) and referral of children to the HCs for immunization. Out of the 17,912 reported DOC, 9,425 found (52.6%) and 8,245 were vaccinated (46% of declared, 87.5% of found). The HCMs reported 484 UVC while the home visits identified 1,315 of which 1,087 were vaccinated (82.7%). Out of a total declared number of 18,396 children to be caught up, 10,740 found (58.4%) and 9,332 vaccinated, i.e. 50.8% (9,332/18,396) of children to be caught up and 86.9% (9,332/10,740) of children found. The total specific recurrent cost of the strategy was XOF 22,375,008, with XOF 2,083 (22,375,008/10,740) per child found and XOF 2,398 (22,375,009/9,332) per child found and vaccinated. In view of these results, this strategy should be implemented in all of the country's low-performing HDs.

Pour améliorer la performance du programme élargi de vaccination de Côte d'Ivoire, nous avons mis en place une stratégie de rattrapage des enfants perdus de vue (EPDV) et des enfants non vaccinés (ENV) dans les 14 districts sanitaires (DS) ayant les plus faibles couvertures vaccinales antirougeoleuses. Cet article présente l'efficacité et le coût de cette stratégie. Nous avons retenu les localités ayant les plus grands nombres d'EPDV : cinq aires de santé (AS) par DS et cinq villages/quartiers par AS. La stratégie qui a été mise en oeuvre par les organisations de la société civile, les responsables des centres de santé (RCS) et les agents de santé communautaire a combiné la sensibilisation des leaders et groupes communautaires, les visites à domicile (VAD) et la référence des enfants aux CS pour la vaccination. Sur les 17 912 EPDV déclarés, 9 425 ont été retrouvés (52,6 %) et 8 245 vaccinés (46 % des déclarés et 87,5 % des retrouvés). Les RCS ont déclaré 484 ENValors que les VAD ont permis d'en identifier 1 315 dont 1 087 ont été vaccinés (82,7 %). Sur un nombre total déclaré de 18 396 enfants à rattraper, 10 740 ont été retrouvés (58,4 %) et 9 332 vaccinés, soit 50,8 % (9 332/18 396) d'enfants à rattraper et 86,9 % (9 332/10 740) d'enfants retrouvés. Le coût récurrent spécifique total de la stratégie était de 22 375 008 FCFA, soit 2 083 FCFA (22 375 008/10 740) par enfant retrouvé et 2 398 FCFA (22 375 008/9 332) par enfant retrouvé et vacciné. Au vu de ces résultats, cette stratégie devrait être mise en oeuvre dans tous les DS à faible performance du pays.

[Fatal Toxic Epidermal Necrolysis Induced by Diclofenac Re-Administration in the Teaching Hospital of Bouaké (Côte d'Ivoire)]. / Syndrome de Lyell d'évolution fatale suite à la réadministration de diclofénac, au CHU de Bouaké (Côte d'Ivoire).

Lyell's syndrome or toxic epidermal necrolysis is an acute and severe cutaneous adverse drug reaction with a significant morbidity and mortality. It is a very rare condition but a vital emergency with a poor prognosis. The diagnosis is clinical and confirmed by a cutaneous biopsy showing a necrosis of the epidermis. It can be due to many drugs including non-steroidal anti-inflammatory drugs. We report a case of fatal Lyell's syndrome after oral re-administration of diclofenac in a patient with a previous history of diclofenac-related Stevens-Johnson syndrome, four years back.

Nous rapportons un cas de syndrome de Lyell mortel après réadministration orale de diclofénac chez un patient ayant des antécédents de syndrome de Stevens-Johnson lié au diclofénac quatre ans auparavant.

Perceptions and practice of health care workers regarding hepatitis B vaccination, Bouaké, Côte d'Ivoire, 2016.

Barriers to immunization are seen in both the general population and the health care workforce. We conducted this study to determine the perception of health workers on vaccination and the immunization of their patients. This cross-sectional descriptive analytical study was carried out among the medical staff in Bouaké, from 10 January to 07 March 2016. The data collected from the interviews were analyzed using Epi info 2000 software and SPSS 17.0. The Chi-2 test and logistic regression were performed and the significance threshold of the tests was 5%. The vaccination status of the 291 health care workers (HCWs) for the hepatitis B virus (HBV) was statistically related to their participation in the course in vaccination during their training (ORa = 1.69, 95% CI: 1.04-2.75 P<0.05) and the systematic verification of the vaccination status of the patient was statistically related to the vaccination status of the HCW (ORa = 4.33, 95% CI: 2.97-8.18, P<0.05). Promoting the vaccination among the population should be dependent on the promotion among HCWs.

[Distribution of species and kdr gene frequency among Anopheles gambiae s.s. and Anopheles coluzzii populations in five agricultural sites in Côte d'Ivoire]. / Distribution des espèces et de la fréquence du gène Kdr chez les populations d'Anopheles gambiae s.s. et d'Anopheles coluzzii dans cinq sites agricoles de la Côte d'Ivoire.

The resistance of Anopheles gambiae s.l. to insecticides constitutes a concern for the programs of malaria control because it can be an obstacle to effective control of the vectors. The follow-up of this resistance is a priority to work out strategies of management and to preserve the means of that major malaria vector control activities. The general objective of this study is to identify the species within An. gambiae s.l., and to determine the frequency of the Kdr gene in An. gambiae s.s. and An. coluzzii in five agricultural sites in Ivory Coast: an urban site, two semirural sites (coffee-trees/cacao-trees, orchard) and two rural sites (rice site and a traditional village without agricultural insecticide). During this study, 2285 specimens of An. gambiae s.l. were analyzed for this purpose. An. gambiae s.s. (in the past called molecular form S) and An. coluzzii (in the past called molecular form M) were the only species of the complex An. gambiae identified in all the sites. The frequency of the Kdr mutation varied from 0.37 in the site without agricultural insecticide to 0.95 in the urban site where there is an intense use of insecticides. Three areas of these species distribution were observed: an area where the species An. gambiae s.s. is dominant (sites located in savanna), an area with predominance of An. coluzzii (in the southern forested area) and an intermediate area where the two species were in a same proportion (pre-forested site).The Kdr mutation was identified in the two species in all the sites in savanna and forest, except in the site without agricultural insecticide where only An. gambiae was resistant. It shows the increase of the receptive potential of An. gambiae s.l. with respect to the Kdr gene and the extension of the resistance to insecticide of this species in Ivory Coast.