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Preliminary Data on Legionella detection in Water Distribution Systems in Cameroon

Journal of Life Sciences 2011年第10期5卷 801-805页

作者： Marguerite Ndayo Wouafo Ariane Nzouankeu Caroline Kemadjou Guy Joseph Ejenguele Dominique Baudon laboratoire d＇Hygiene Environnement Section Microbiologie Centre Pasteur du Cameroun B.P. 1274 Yaounde Cameroun

After the declaration of the first case of Legionnaire＇s disease in Cameroon in 2007, the centre pasteur of Cameroon implemented the detection method for Legionella. The introduction of this new method was put in places in order to investigate Legionella spp. colonization of water distribution systems （WDS） of large buildings including hospitals, hotels and Off Shore Exploitations Sites （OSES） in an attempt to identify risk factors for Legionella spp. Water systems of 6 hotels, 6 hospitals and 6 ships were investigated for the presence of Legionella spp.. A total of 130 samples were collected, 77 from hotels, 27 from hospitals and 26 from ships. 51 Legionella spp. were isolated from 41 （31.54%） water samples. Of a total of 51 positive isolates, 40/51 （78.4%） were L. pneumophila with 21 （52.5%） Legionellapneumophila serogroup （sg） 1, 16 （40%） L. pneumophila sg 5, 2 （5%） L. pneumophila sg 6, 1 （2.5%） L. pneumophila sg 7 and 11/51 Legionella spp. with 10 （90%） L. anisa, 1 （10%） Legionella dumoffii. 5 L. pneumophila sg 1 were associated with 5 L. pneumophila sg 5 and 4 L. pneumophila sg 1 were associated with 4 L. anisa. These results showed that WDS of hospitals, hotels and ships can be heavily colonized by Legionella spp. and may present a risk of Legionnaires＇ disease. Based on these preliminary results, we have just put in place a Legionella survey protocol in Cameroon.

关键词： Legionnaire's disease investigation Legionella colonization water distribution systems.

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Evaluation of inpatients Clostridium difficile prevalence and risk factors in Cameroon

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Infectious Diseases of Poverty 2020年第4期9卷 172-172页

作者： Ingrid Cécile Djuikoue Ernest Tambo Gildas Tazemda Omer Njajou denise Makoudjou Vanessa Sokeng Morelle Wandji Charlène Tomi Aubain Nanfack Audrey Dayomo Suzie Lacmago Falubert Tassadjo Raissa Talla Sipowo Caroline Kakam Aicha Bibiane Djoko Clement Nguedia Assob Antoine Andremont Frédéric Barbut Département de Microbiologie de la Facultédes Sciences de la Santéde l’Universitédes Montagnes BangangteCameroon Prevention and Control Foundation BangangteCameroon Medical Diagnostic Centerto Yaounde YaoundeCameroon laboratoire de bactériologie du centre pasteur du cameroun YaoundeCameroon Faculty of Health Sciences University of BueaPO Box 63BueaSW RegionCameroon Faculty of Medicine Xavier-Bichat CampusUniversity of Paris VII–Denis DiderotParisFrance Faculty of Pharmacy Paris–University of Paris DescartesParisFrance

Background Clostridium difficile,rarely found in hospitals,is a bacterium responsible for post-antibiotic diarrhea and Pseudomembranous Colitis(CPM).*** selective pressure represents potential public health problem due to the production of toxins A and B serious pathologies effects/consequences.A transversal and analytic study was to assess the risk factors of *** infection and to determine the prevalence of *** in patients received in randomly selected five hospitals in Yaoundé,*** A total of 300 stool samples were collected from consented patients using a transversal and analytic study conducted from 10th July to 10th November 2018 in five hospitals in *** detection or diagnostic kit was CerTest *** Glutamate dehydrogenase+Toxin A+Toxin B based on immuno-chromatographic assay.A univariate and multivariate analysis allowed us to highlight the associated *** The results showed a prevalence of *** of 27.33%(82/300 stool patients’samples taken).Of these 27.33%,the production of Toxin A and Toxin B were 37.80 and 7.31%*** univariate analysis,hospitalization was a significant(P=0.01)risk factor favoring *** *** multivariate analysis,corticosteroids and quinolones use/administration were significantly(adjusted Odd Ratio,aOR=14.09,95%CI:1.62–122.54,P=0.02 and aOR=3.39,95%CI:1.00–11.34,P=0.05 respectively)risk factor for this *** The prevalence of *** infections(CDI)remain high in these settings and may be related not only to permanent steroids and *** education to both medical staff and patients on the prevalence and public health impact of *** can be core inimproving rationale prescription of steroids and antibiotics to patients and promote human health and exponential growth in Cameroon.

关键词： Clostridium difficile Prevalence Diarrhea Risk factors Quinolone Cephalosporin Cameroon

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Antimicrobial Resistance of Pseudomonas aeruginosa Isolated from Human Infections in N’Djamena, Chad

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Open Journal of Medical Microbiology 2023年第1期13卷 17-30页

作者： Ahmat Mahamat Ahmat Mahamat Ali Bolti Fissou Henry Yandai Hamit Mahamat Alio Martin-Paul Baane Mayoré Atéba Djibrine Evariste Bako Nicolas Barro Choua Ouchemi Ecole Doctorale Sciences Techniques et Environnement Université de N’Djamena N’Djamena Tchad centre Hospitalier Universitaire la Renaissance (CHU-R) N’Djamena Tchad Faculté des Sciences de la Santé Humaine Université de N’Djamena N’Djamena Tchad Institut de Recherche en Elevage pour le Développement (IRED) N’Djamena Tchad laboratoire de Biologie Moléculaire d’Epidémiologie et de Surveillance des Bactéries et Virus Transmissibles par les Aliments (LaBESTA) Université Joseph KI-ZERBO Ouagadougou Burkina Faso Hôpital de la Caisse Nationale de Prévoyance Sociale Maroua Cameroun Institut National Supérieur du Sahara Iriba Tchad

Background: Urinary Tract infections and pus are major public health problems. The evolution of bacterial resistance to antibiotics makes the treatment of these infections problematic. This is why this study is undertaken to identify and evaluate the resistance of Pseudomonas aeruginosa to antibiotics. Methods: This is a prospective study carried out from december 2020 to November 2021. The germs were isolated on the agar supplemented with cetrimide and identified by the API 20 NE gallery method according to the manufacturer’s protocol. The strains’ resistance profiles were determined by the diffusion method on Mueller-Hinton according to the criteria EUCAST- 2021. Results: A total of 46/1467 (3.13%) Pseudomonas aeruginosa were identified, of which 29/1008 (2.87%) were urinary tract infections and 17/459 (3.70%) were pus. The high resistances were: 97.8% to ceftazidim, 91.3% to aztreonam, 93.5% to cefepim, 82.6% to piperacillin, 58.7% to levofloxacin, 52.2% to amikacin, 47.8% to tazobactam-piperacillin, 47.8% to tobramycin and 43.5% to ciprofloxacin. Low resistance was only 2.2% to fosfomycin, 2.2% to colistin and 15.2% to imipenem. Conclusion: This study reveals the considerable resistance of Pseudomonas aeruginosa to commonly used antibiotics, and thus compromises the empirical treatment practiced in hospitals. This result motivates the need to carry out susceptibility testing of isolates before any prescription of antimicrobials.

关键词： Pseudomonas aeruginosa Resistance to Antibiotics Urine Pus N’Djamena

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