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Comparative Study of the Widal Test against stool culture in the Diagnosis of Suspected Cases of Typhoid Fever in Some Low Income Communities in the Adamawa Region of Cameroon

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Journal of Biosciences and Medicines 2024年第6期12卷 178-190页

作者： Mariane Lucie Ngueguim Bernard Viban Tangwa Victor Ngu Ngwa Jules Romain Ngueguim Abdoulmoumini Mamoudou School of Veterinary Medicine and Sciences University of Ngaoundere Ngaoundere Cameroon Department of Veterinary Medicine University of Buea Buea Cameroon Institute de Recherhe Agricole pour le Development (IRAD) Ngaoundere Cameroun

Introduction: Infectious diseases constitute a major concern of public health in developing countries. Facilities and well trained staff have been shown to be one of the major obstacles in the rapid and quality diagnosis of these diseases. As such, we carried out an analysis to compare the Widal test and stool culture to identify febrile patients with Salmonella infection. Method: A cross sectional study was conducted to diagnose salmonella infection with out-patients who demonstrated signs of salmonella infection. Serum was harvested from blood collected from 368 (Vina = 234, Mayo Banyo 65, and Djerem = 69) patients accompanied by stool, Widal test was conducted on the spot and stool was taken to a reference laboratory for culture using standard microbiological methods, sociological set up was calculated in percentages, prevalence was calculated using excel while statistical difference was calculated using SPSS. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were calculated to compare the Widal test against stool culture. Results: A total of 368 (50.8% females and 49.2% males) participants took part in the survey. Salmonella prevalence (66.24%) in stool culture in the Vina division was significantly different (p 0.05). The sensitivity,specificity, PPV, and NPV of slide agglutination test against stool culture varied from different areas (Vina: 51.6%, 73.62%, 79.21% and 43.61%;Mayo Banyo: 60.53%, 77.78%, 79.31% and 58.33%;Djerem: 53.18%, 83.73% 73.91% and 67.39%) respectively. Slide agglutination test has a fair agreement with the stool culture (kappa, Vina = 0.202;Mayo Banyo = 0.37 and Djerem = 0.38). Conclusion: Generally, in the three areas of study, the Widal test had a fair correlation with the stool culture;This means the Widal test should not be used alone but in combination with stool culture in the detection of salmonella infections.

关键词： Salmonella Infections stool culture Widal Test Adamawa Region Cameroon

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Value of routine stool testing for pathogenic bacteria in the evaluation of symptomatic patients with ileal pouches

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Gastroenterology Report 2018年第2期6卷 93-100,I0001页

作者： Amandeep Singh Jean Ashburn Gursimran Kochhar Rocio Lopez Tracy L.Hull Bo Shen Department of Gastroenterology&Hepatology Digestive Disease and Surgery InstituteThe Cleveland Clinic FoundationClevelandOHUSA Department of Colorectal Surgery Digestive Disease and Surgery InstituteThe Cleveland Clinic FoundationClevelandOHUSA Department of Quantitative Health Sciences Digestive Disease and Surgery InstituteThe Cleveland Clinic FoundationClevelandOHUSA

Background:In symptomatic patients with an ileal pouch,stool studies are often sent to diagnose enteric *** of this study is to find the value of routine stool studies in the evaluation of symptomatic patients and the clinical implications of such pathogens in patients with ileal ***:Consecutive ileal pouch-anal anastomosis(IPAA)patients who had stool tests out of a 2283-case registry from 2002 to 2015 were included in the *** with positive stool cultures were compared with controls(symptomatic without positive stool culture)in a 1:4 *** to antibiotic therapy,recurrence rate and rate of hospitalization at 1 and 3 months were ***:A total of 643(28%)had stool cultures done and only 1.7%(11/643)were found to be positive for stool *** spp.(45%)was the most common pathogen followed by Aeromonas spp.(36%).Non-smokers and patients without any antibiotic use in the last 3 months were found to have higher prevalence of positive stool cultures than controls(pstool testing(36.4%vs 6.8%,p¼0.009)and mortality(18.2%vs 0%,p¼0.040).However,there were no statistically significant differences in the clinical outcomes in patients with positive stool cultures who received pathogen-directed ***:We found that the yield of stool tests for bacterial pathogens in symptomatic pouch patients was extremely low and the treatment of detected pathogens had a minimum impact on the disease course of *** clinical utility of routine stool culture in those patients warrants further study.

关键词： pouchitis ileal pouch enteric pathogens stool culture

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A rare case of infectious colitis

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Gastroenterology Report 2016年第4期4卷 328-330,I0003页

作者： Aditya Kalakonda Shashank Garg Suraj Tandon Rakesh Vinayak Sudhir Dutta State University of New York(SUNY)Upstate Medical University SyracuseNYUSA Department of Gastroenterology Sinai Hospital of BaltimoreBaltimoreMDUSA

Methicillin-resistant Staphylococcus aureus(MRSA)is responsible for numerous infectious *** tract involvement is rather rare and only a handful of cases of MRSA colitis have been reported in North *** present a case of MRSA colitis in an adult without apparent risk *** computed tomography(CT)showed thickening of the sigmoid colon,indicative of colitis,and empiric therapy with ciprofloxacin and metronidazole was *** work-up for infection-including blood and stool cultures,and stool Clostridium difficile toxin assay-was *** patient’s clinical status improved but his diarrhea did not *** of stool culture demonstrated luxuriant growth of MRSA sensitive to *** vancomycin was administered and the patient’s symptoms promptly ceased.

关键词： methicillin-resistant Staphylococcus aureus infectious colitis stool culture

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Asymptomatic Carriage of Salmonella and Intestinal Parasites in Pupils in Yaounde

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Open Journal of Medical Microbiology 2021年第2期11卷 119-128页

作者： Rosanne Minone Ngome Michel Toukam Nadia Christelle Noumedem Anangmo Sylvain Raoul Simeni Njonnou Emilia Lyonga Mbamyah Hortense Gonsu Kamga Department of Microbiology Hematology and Infectious Diseases Faculty of Medicine and Biomedical Sciences University of Yaounde I Yaounde Cameroon Clinical Biology Laboratory Hospital Center for Research and Application in Endoscopic Surgery and Human Reproduction Yaounde Cameroon Department of Microbiology Haematology and Immunology Faculty of Medicine and Pharmaceutical Sciences University of Dschang Dschang Cameroon Department of Internal Medicine and Specialties Faculty of Medicine and Pharmaceutical Sciences University of Dschang Dschang Cameroon Bacteriological Laboratory Yaounde University Teaching Hospital Yaounde Cameroon

Background: Feco-oral transmitted diseases (FOTD) remain a public health issue, particularly in developing countries. Data concerning the carriage of Salmonella and intestinal parasites in children are available worldwide but are lacking in Cameroon. This study aimed to determine the asymptomatic carriage of Salmonella and intestinal parasites in children of two primary schools in Yaoundé. Methods: A cross-sectional descriptive study was conducted from October 2017 to May 2018 in two primary schools (from rural and urban areas) in the 7th precinct of Yaoundé. Sociodemographic, clinical and paraclinical (rectal swab, direct examination of fresh stool and bacteriological culture on Hektoen medium) data were collected. Results: We included 368 (192 boys) pupils from both schools (184 in each school) with a mean age of 8.99 ± 2.21 years. None of the children was infected by Salmonella spp. Intestinal parasite prevalence was 9.80% (6.52% of children from the urban school vs 13.04% from the rural ones). The intestinal parasite prevalence tended to be higher in girls than in boys (11.98% vs. 7.39%). Among intestinal parasites, protozoa were the most widely found. Entamoeba histolytica and Giardia intestinalis were the most prevalent pathogenic intestinal protozoa (11.11% vs. 25% of all positive stool exams). The helminths, less frequent, were represented by Ascaris lumbicoides and Enterobius vermicularis. The factors associated with intestinal parasite carriage were mainly rural school location and age between 11 -

关键词： stool culture Intestinal Parasites Pupils

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