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Asymptotic Analysis of a Stochastic Model of Mosquito-Borne Disease with the Use of Insecticides and Bet Nets

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Journal of Applied Mathematics and Physics 2024年第1期12卷 305-329页

作者： Boubacar sidiki Kouyaté Modeste N’zi Department of Mathematics and Computer Science University of Science Technical and Technologies of Bamako Bamako Mali Laboratory of Applied Mathematics and Computer Science University Felix Houphouet-Boigny Abidjan C&#244te d’Ivoire

Ross’ epidemic model describing the transmission of malaria uses two classes of infection, one for humans and one for mosquitoes. This paper presents a stochastic extension of a deterministic vector-borne epidemic model based only on the class of human infectious. The consistency of the model is established by proving that the stochastic delay differential equation describing the model has a unique positive global solution. The extinction of the disease is studied through the analysis of the stability of the disease-free equilibrium state and the persistence of the model. Finally, we introduce some numerical simulations to illustrate the obtained results.

关键词： Vector-Borne Disease Epidemic Model Stochastic Delay Differential Equations Stochastic Stability Lyapunov Functional Technique

Velamentous Cord Insertion: Interest of Antenatal Diagnosis and Review of the Literature

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Open Journal of Obstetrics and Gynecology 2024年第2期14卷 234-239页

作者： Karam Harou Aboubacar sidiki Sidibe Hicham Abdelkhalki Abderaouf Soummani Department of Obstetrics and Gynecology Caddi Ayyad University Medical Hospital Med VI Marrakech Morocco

Velamentous insertion of the umbilical cord corresponds to the insertion of the cord directly on amniotic membranes. It is a rare situation whose frequency varies from 0.5% to 1.69% of single pregnancies. It must be diagnosed during the morphological ultrasound of the 2nd trimester, actively looking for the association with a vasa previa, due to the risk of fetal haemorrhagic threat. We report an antenatal diagnosis of velamentous cord insertion and its management with literature review.

关键词： Velamentous Cord Insertion Vasa Previa Antenatal Diagnosis Ultrasound Doppler Benckiser’s Hemorrhage

Stability of a Delayed Stochastic Epidemic COVID-19 Model with Vaccination and with Differential Susceptibility

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Journal of Applied Mathematics and Physics 2024年第2期12卷 509-532页

作者： Modeste N’zi Boubacar sidiki Kouyaté Ilimidi Yattara Modibo Diarra Laboratory of Applied Mathematics and Computer Science University Felix Houphouet-Boigny Abidjan C&#244te d’Ivoire Department of Mathematics and Computer Science University of Science Technic and Technologies Bamako Mali

In this paper, we treat the spread of COVID-19 using a delayed stochastic SVIRS (Susceptible, Infected, Recovered, Susceptible) epidemic model with a general incidence rate and differential susceptibility. We start with a deterministic model, then add random perturbations on the contact rate using white noise to obtain a stochastic model. We first show that the delayed stochastic differential equation that describes the model has a unique global positive solution for any positive initial value. Under the condition R0 ≤ 1, we prove the almost sure asymptotic stability of the disease-free equilibrium of the model.

关键词： SIRS Delayed Epidemic Model Nonlinear Incidence rate Lyapunov Function Asymptotic Stability in Probability

Molecular Identification of Mycobacterium Strains Responsible of Bovine Tuberculosis Cases in Bobo-Dioulasso Slaughterhouse, Burkina Faso

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Advances in Microbiology 2024年第2期14卷 105-114页

作者： Mariétou Konate Aminata Fofana^# Yacouba Kouadima Aboubacar sidiki Ouattara Adama Sanou UFR/Sciences et Techniques Universit&eacute Catholique de l’Afrique de l’Ouest Unit&eacute Universitaire &agrave Bobo (UCAO/UUB) Bobo-Dioulasso Burkina Faso Departement Biomé dical et Sant&eacute Publique (BioMed/SP) Institut de Recherche en Sciences de la Sant&eacute (IRSS) Bobo-Dioulasso Burkina Faso Departement de Biochimie-Microbiologie UFR Sciences de la Vie et de la Terre Universit&eacute Nazi BONI Bobo-Dioulasso Burkina Faso Centre de Recherche en Sciences Biologiques Alimentaires et Nutritionnelles (CRSBAN) Universit&eacute Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire de Mycobacté riologie Centre MURAZ Institut National de Sant&eacute Publique Bobo-Dioulasso Burkina Faso

Bovine tuberculosis (bTB) is an endemic zoonosis significantly affects animal health in Burkina Faso. The primary causative agent is Mycobacterium tuberculosis (M. tuberculosis) complex, mainly M. bovis. Cattle are considered as natural reservoir of M. bovis. However, in Burkina Faso, the circulation of these strains remains poorly understood and documented. This study aimed to identify and characterize Mycobacterium strains from suspected carcasses during routine meat inspection at Bobo-Dioulasso refrigerated slaughterhouse. A prospective cross-sectional study was conducted from January 2021 to December 2022 on cases of seizures linked to suspected bovine tuberculosis. Microbiological and molecular analyzes were used for mycobacterial strain isolation and characterization. Out of 50 samples, 24% tested positive by microscopy and 12% by culture. Molecular analysis identified 6 strains of Mycobacteria, exclusively Mycobacterium bovis specifically the subspecies bovis (Mycobacterium bovis subsp bovis). In conclusion, M. bovis subsp bovis is the primary agent responsible for bovine tuberculosis in Bobo-Dioulasso. Continuous monitoring of mycobacterial strains is therefore necessary for the effective control of this pathology in the local cattle population.

关键词： Bovine Tuberculosis Mycobacterium bovis Molecular Identification Cattle Population Burkina Faso

Contribution of Imagery in the Diagnosis of Multisystemic Sarcoidosis in the Service Radiology Department of the Mother and Child Hospital “Le Luxembourg” in Bamako: A Case Report

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Open Journal of Medical Imaging 2024年第3期14卷 79-85页

作者： Mariko Mahamane Camara Mamoudou Keita Aboubacar sidiki N’Diaye Mahamadou Camara Mody Abdoulaye Fofana Youssouf Traoré Mohamed Maba Sidibé Siaka Sanogo Souleymane Keita Adama Diaman Department of Radiology Mother and Child Hospital Luxembourg Bamako Mali Medical Imaging Exploration and Diagnostic Center Conakry Guinea Assistant at the Faculty of Health Sciences and Techniques at the Gamal Abdel Nasser University of Conakry Department of Radiology Military Hospital of Bamako Bamako Mali Department of Radiology Mali Hospital Bamako Mali Department of Radiology Point G Hospital Bamako Mali

The aim of this study was to report a case of multi-visceral sarcoidosis at the Mother-Child Hospital Center (CHME) “Le Luxembourg” in Bamako, Mali. Observation: This is a patient aged 62 at the time of consultation, a housewife, residing in the Banconi district, who was referred to us for thoracic-abdominopelvic imaging for chronic liver disease. After several diagnostic errors, the thoracic-abdominopelvic CT scan and liver MRI performed in our center showed, at the thoracoabdominal level, bilateral diffuse pulmonary micronodules and bilateral mediastinal-hilar lymphadenopathy;on the abdominal level, a dysmorphic liver with plaques of steatosis and a granular appearance of the liver parenchyma without periportal fibrosis. These imaging data combined with those from the liver nodule biopsy and biology confirmed the diagnosis of sarcoidosis type II. Treatment with corticosteroids gave satisfactory results and the patient recovered after 18 months. Clinical and CT monitoring 2 years from the start of the disease and 2 months from the end of treatment showed complete resolution of the lesions. Conclusion: The multi-visceral location of sarcoidosis is an entity whose diagnosis remains difficult;diagnostic and interventional imaging has an important place in its management.

关键词： Sarcoidosis Multi Visceral Imaging CHME Luxembourg

Complications of Corticosteroid Therapy in Rheumatological Practice in Guinea

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Open Journal of Rheumatology and Autoimmune Diseases 2024年第3期14卷 108-117页

作者： Aly Badra Kamissoko Eve Urielle Amenan Ledjou Mamadou Lamine Diallo Abèni Faouzyath Yaya Mohamed Mouhoudhoiri Yasser Aboubacar sidiki Condé Souleymane Camara Marie Traoré Abdoulaye Barry Moriba Touré Kaba Condé Owonayo Oniankitan Department of Rheumatology Ignace Deen University Hospital Conakry Guinea Department of Rheumatology Cocody University Hospital Abidjan Cte dIvoire Department of Rheumatology Sylvanus Olympio University Hospital Lom Togo

Introduction: Corticosteroid therapy used in rheumatology is effective but can lead to complications. The objective was to describe the complications of corticosteroid therapy in rheumatological practice at Ignace Deen University Hospital (Conakry). Methods: Cross-sectional study from July 1, 2022 to March 31, 2023. All patients who had been diagnosed with a rheumatological disease and who had received corticosteroid therapy were included. Results: Of the 1489 patients suffering from rheumatological diseases, 238 (15.9%) had received corticosteroid therapy. The average age of the patients was 48.5 ± 17.16 years with a female predominance (70.5%). The main indications for corticosteroid therapy were lower back pain due to probable disco-radicular impingement (35.8%) followed by rheumatoid arthritis (21.9%). The predominant method of administration was infiltration (56.9%). The average dosage was 24.2 ± 13.5 mg prednisone equivalent (range: 5 mg and 40 mg). Complications were present in 26 patients (10.9%) such as muscle cramps (3.8%), hypocalcemia (3.4%), edema of the lower limbs (3%), stimulation of appetite and weight gain (3%), high blood pressure (2.5%), hyperglycemia (2.5%). The occurrence of complications was associated with the high dose of corticosteroid (p = 0.014) and long-term use (p = 0.000). Conclusion: Corticosteroid therapy used in 15.9% of consultations in the rheumatology department of Ignace Deen University Hospital led to 10.9% of complications. These complications were related to the dose and duration of corticosteroid therapy.

关键词： Corticosteroids Complications Guinea

Epidemiological, Clinical and Paraclinical Profile of Osteoarthritis of the Lower Limbs in Obese Patients at the Cocody University Teaching Hospital

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Open Journal of Rheumatology and Autoimmune Diseases 2024年第2期14卷 69-76页

作者： Nzima Brice Kollo Aboubakar Bamba¹ Aboubacar sidiki Condé Nzima Hilary Ngon Kanbaye Medom Ada Nina Kpami Yaya Coulibaly Kan Joseph Enoch Koffi Ehaulier Soh Christian Louis Kouakou Mohamed Diomandé¹ Edmond Eti Rheumatology Department Cocody University Hospital Abidjan C&#244te d&#8217Ivoire Internal Medicine Department Yaounde University Hospital Yaounde Cameroon Rheumatology Department Bouake University Hospital Bouake C&#244te d&#8217Ivoire

Objective: To describe the epidemiological, clinical and paraclinical characteristics of osteoarthritis of the lower limbs in obese patients at the Cocody University Teaching Hospital. Methodology: This was an analytical cross-sectional study carried out in the rheumatology department of the Cocody UTH in Abidjan (Ivory Coast) from March 1 to April 30 2023. Patients who came for rheumatology consultation presenting with mechanical arthralgia of the lower limbs, who were obese, had radiographic images were included. All patients without radiographic images were excluded. Obesity was defined as a body mass index (BMI) greater than or equal to 30 kg/m. The Chi2 test was used to compare proportions and determine the existence of associations between osteoarthristis and obesity, obesity severity and radiographic stage of osteoarthritis as well as the functional impact. A p-value below a predefined threshold (p = 0,05) indicates a significant relationship between the variables. Result: Out of 185 patients received for osteoarthritis of the lower limbs during the study period, 136 were obese (74%). There were 115 women (84.6%) with an average age of 56.03 with a standard deviation of 12.72 years (extremes: 22 and 84 years). The main socio-professional category was the informal sector (30%). The majority of patients had a low socio-economic level (80.2%) and lived in urban areas (92.6%). The most common past medical history was hypertension (33.08%) followed by peptic ulcer disease (16.91%). Patients had a body mass index class 1 (81.6%), class 2 (15.40%) and class 3 (2.90%). The average duration of symptom progression until diagnosis was 11 months. Genu varum was the main static disorder (56.10%) and the knee joint was the dominant topography (90.4%) with a bilateral localization (80%). The average Lequesne index was greater than 8 (59.5%). The Kellgren and Lawrence radiographic stages were stage 1 (9.20%), stage 2 (46.90%), stage 3 (29.20%) and stage 4 (6.90%).

关键词： Osteoarthritis Lower Limbs Obesity Abidjan

Digestive Surgical Emergencies at the “Mother Child”Hospital Center Luxembourg in Mali

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Surgical Science 2024年第5期15卷 299-310页

作者： Cheickna Tounkara Amara Coulibaly Yaya Ongoiba Aboubakrine Sylla Abdoul Karim Simaga Bréhima B. Coulibaly Aminata Dabo Souleymane Dembele Samake Hamidou sidiki Keita Sékou Bréhima Koumare Soumaïla Keita Bakary Tientigui Dembele Zimogo Zié Sanogo Djibril Sangare Department of General Surgery and Anesthesia-Resuscitation of the “ Mother Child&#8221 Hospital Center Luxembourg Bamako Mali Social Health Service of the Armed Forces of Mali Bamako Mali Department of General Surgery “ A&#8221 and Cardiovascular of Point G University Hospital Bamako Mali Department of General Surgery of CHU Gabriel TOURE Bamako Mali

Digestive surgical emergencies concern all patients admitted urgently, for whom a decision for surgical intervention may be necessary within 24 hours. They are on guard duty day and night. To carry out this work, we set ourselves the objectives of: 1) Studying digestive surgical emergencies in the general surgery department of the “Mother Child” Le Luxembourg hospital in Bamako, Mali;2) Determine the frequency of digestive surgical emergencies, 3) Describe the clinical and therapeutic aspects, and 4) Analyze the results of treatment. From November 1, 2022 to October 31, 2023, the general surgery department of the “Mother Child” Luxembourg Hospital Center in Bamako, Mali, carried out 139 digestive surgical emergencies whose files were usable;75 men and 64 women, a sex ratio of 1.2. The 20 - 40 years old age group was the most represented, at 40.29%. The average age was 39 years;the extremes 16 years and 93 years with a standard deviation of 21.65 years. The reference concerned 51.08% of our patients. Abdominal pain was the main reason for consultation (100% of cases). In the majority of cases, the physical examination made it possible to make the diagnosis. Faced with certain clinical cases, we requested ultrasound (109/139), ASP (46/139) and CT (15/139). The main etiology was acute appendicitis with 42.45% of cases. The frequency of digestive surgical emergencies was 10.71% of all activities in the general surgery department of the “Mère Enfant” Le Luxembourg hospital center in Bamako. All our patients were seen in consultation by an anesthesiologist before entering the operating room. The surgical consequences were complicated in 11.51% of cases with 7.91% deaths. Surgical site infections accounted for 12.5% of postoperative complications. Eleven deaths were noted, representing 68.75% of complications and 7.91% of our sample. Acute peritonitis was the cause of death in 100% of cases. The average cost of care was 329,000 FCFA.

关键词： Emergency Digestive Surgery Post-Operative Complication

Ileal Occlusion on Bezoars at Kati BSS Hospital

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Surgical Science 2019年第1期10卷 39-43页

作者： Keita Koniba Abdoulaye Diarra sidiki Keita Issa Traore Salia Coulibaly Fadima Tall Daouda Diallo Oulematou Coulibaly Assitan Kone Boubacar Kone Mahamadou Bacary Coulibaly Daouda Konate Ismael konare Drissa Traore General Surgery Department Kati Mali Medical Imaging Department Kati Mali Anesthesia Resuscitation Department Kati Mali Ophthalmology Department Kati Mali

Bowel occlusions by bezoars are rare pathologies. They are due to an ob-struction of the intestinal lumen by a solid mass of fruits or undigested vegetable fibers. They are seasonal (wild fruit season from March to June) in the Sahel Zone. We report a case of small bowel obstruction in a 35-year-old rural man after swallowing a significant amount of wild grapes (Lannea microcarpa). We proceeded to the resection of the occluded ileal segment and performed an ileal terminal ileal anastomosis. There weren’t any complications during the postoperative site.

关键词： Bezoars Occlusion Jejunum Season