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Methicillin Resistant Staphylococcus aureus in Pigs and Pig Breeders in Three Regions of Cameroon

Open Journal of Medical Microbiology 2022年第4期12卷 129-140页

作者： Cecile Ingrid Djuikoue Dorine Ekeu Ngatcheu Olivier Pomte Melissa Julie Gonfouli Euphrasie Tsono Kemegne Charnelle Kemo Mouafo Andrea Sheisley Tchouotou I Didi vynnie manuella nyatchoutou Cedric Seugnou Nana Ruffin Apalata Venant Tckokonte-Nana Faculty of Health Sciences University des Montagnes Bangangte Cameroon Foundation Prevention and Control Bangangte Cameroon Faculty of Sciences University of Douala Douala Cameroon National Health Laboratory Services Walter Sisulu University Mthatha South Africa

The spread of antibiotic resistance, whether in the community or in the hospital, has recently become a major public health problem. Moreover, livestock seems to be a reservoir of resistant microorganisms such as porcine methicillin resistant Staphylococcus aureus (P-MRSA) whose carriage and transmission was mainly demonstrated in persons with occupational exposure to pigs. Much uncertainty remains about the public health implications of P-MRSA. To address concerns that exist regarding the zoonotic risk that pig carriers pose to breeders, the prevalence of P-MRSA in pigs and pig breeders was determined among 152 pig breeders in three regions of Cameroon. Materials and Method: Participants in this study came from Adamawa, Far North and Littoral regions of Cameroon. A total of 152 pig breeders or farm workers participated in this study. After having collected some social and cultural data with the aid of a questionnaire, nasal swabs were collected from pigs (n = 275) and their breeders using the standard collection procedures and placed in cooler containing cold accumulators. For each sample, microbiological assays were done as well as antibiotic susceptibility tests. Results: MRSA was isolated from 25 out of 275 pigs sampled (9.09%) and from 32 out of 152 (21.05%) pig breeders sampled;33 breeders (21.71%) were carriers of S. aureus including 32 MRSA and one MSSA. The prevalence of MRSA nasal carriage was 21.05% ± 6.48. A significant negative association between body protection and nasal carriage of MRSA (OR = 0.29, 95% CI [0.093;0.93];p = 0.04) was observed. In each region, similar strains of MRSA were isolated both in pigs and their breeders with the same antibiotic resistant profile. Conclusion: The prevalence of MRSA though not high compared to European countries warrants further research as data on this zoonosis is scarce in our context. As such, transmission of MRSA from pigs to pig breeders or vice-versa constitutes a real danger, and this relationship may be a

关键词： Methicillin Resistant Staphylococcus aureus MRSA Pig Breeders Pigs Cameroon

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Phenotypic Characterization of Carbapenemase-Producing Enterobacteriaceae Strains in a Referral Teaching Hospital in Yaoundé, Cameroon

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Open Journal of Medical Microbiology 2023年第1期13卷 52-67页

作者： Cecile Ingrid Djuikoue Paule Dana Djouela Djoulako Rodrigue Kamga Wouambo Charlène Nkouankou Tomi Christiane Possi Kiyang Murielle Chantale Tchitchoua vynnie manuella nyatchoutou Blondelle Kitio Messeu Herman Koyouo Tagne Cedric Dylan Seugnou Nana Nadjia Benhamed Hortense Gonsu Kamga Benjamin D. Thumamo Pokam Faculty of Health Sciences Université des Montagnes Bangangté Cameroon Faculty of Medicine Sorbonne Université Paris France Division of Hepatology Department of Medecine II Leipzig University Medical Center Leipzig Germany University of Sciences and Technology Oran Algeria Bacteriology Unit University Teaching Hospital Yaounde Cameroon Department of Medical Laboratory Science Faculty of Health Sciences University of Buea Buea Cameroon

Background: Carbapenemase-producing Enterobacteriaceae (CPE) are an important and increasing threat to global health. They are nowadays more encountered routinely in hospitals and cause high morbidity and mortality due to limited therapeutic alternatives. This study sought to determine the prevalence of CPE in Yaoundé teaching hospital, Cameroon, and the associated risk factors. Materials and Method: To achieve this goal, a descriptive cross-sectional study coupled to an analytical component with consecutive collection of Enterobacteria strains was carried out during a three-month period (from 27th July to 24th October 2018) in the University Teaching Hospital of Yaoundé, Cameroon. The oxidase and biochemical identification tests using a miniaturized Api 20 E system were performed on colonies grown on Eosin Methylene Blue (EMB) medium and subcultured on nutrient agar. Drug susceptibility testing was carried out according to the Antibiogram Committee of the French Society of Microbiology (CA-SFM 2018.V.2.0). The detection of carbapenemase production was performed by the CA-SFM 2018 algorithm for the screening of carbapenemase-producing enterobacteriaceae and its classification by inhibitory synergy tests. Results: Out of the 104 isolates, Escherichia coli (50%) was the most prevalent species, followed by Klebsiella pneumoniae (37.5%) and Citrobacter frendii (12.5%). Drugs susceptibility patterns showed a high resistance to penicillins group (97.4% to amoxicillin), cephalosporins (68.4% to cefotaxim, 58.1% to cefixim, 60.7% to ceftazidim, 57.1% of cefoxitin) and aztreonam (55.7%). However, 11.9% carbapenems related resistance was noticed: 14.4% to imipenem, 13.8% to ertapenem and 7.5% to meropenem. Numerous co-resistance to quinolones (65.8%), fluoroquinolones (49.6%), aminoglycosides (49.6%) and cotrimoxazole (71.8%) were also observed. From 104 isolates, AmpC production represented 23.08% (25/104) and 36.54% (38/104) were ESBL-isolates. The ove

关键词： Enterobacteriaceae Antibiotics Carbapenemase Resistance

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