ABSTRACT
INTRODUCTION: Many studies still show significant numbers of surgical patients contracting nosocomial infections each year globally with high morbidity and mortality. The aim of this study was to identify potential bacteria reservoirs that may be responsible for nosocomial infection in surgical services in the Yaoundé University Teaching Hospital (YUTH) and the Central Hospital Yaoundé (CHY). METHODS: A cross sectional descriptive study was conducted from June to August 2012. Air, water, and surface samples were collected from two surgical services and subjected to standard bacteriological analysis. RESULTS: A total of 143 surface samples were collected. Bacteria were isolated in all surfaces except from one trolley sample and a surgical cabinet sample. The predominant species in all services was coagulase negative Staphylococcus (CNS). The average number of colonies was 132. 82 CFU/25 cm(2). The bacteria isolated in the air were similar to those isolated from surfaces. From the 16 water samples cultured, an average of 50.93 CFU/100ml bacteria were isolated. The distribution of isolated species showed a predominance of Burkholderia cepacia. CONCLUSION: These results showed the importance of the hospital environment as a potential reservoir and source of nosocomial infections amongst surgical patient at YUTH and CHY, thus we suggest that Public health policy makers in Cameroon must define, publish guidelines and recommendations for monitoring environmental microbiota in health facilities.
Subject(s)
Air Microbiology , Cross Infection/microbiology , Equipment and Supplies, Hospital/microbiology , Water Microbiology , Bacteria/isolation & purification , Cameroon , Cross-Sectional Studies , Equipment Contamination , Hospitals , HumansABSTRACT
INTRODUCTION: Sore throat is a common complaint in general practice which is more frequent in children. The most frequent pathogenic bacteria associated with this infection is Streptococcus pyogenes. Rapid Antigen Diagnostic Test (RADT) facilitates the rapid identification and consequently prompt treatment of patients, prevents complications, and also reduces the risk of spread of Group A Streptococcus (GAS). The main objective of this study was to assess the diagnostic value of a rapid streptococcal antigen detection test in patients with sore throat. METHODS: A cross-sectional descriptive study was carried out from January to April 2011 on patients aged 3 to 72 years consulting for pharyngitis or sore throat at the paediatric and Ear, Nose and Throat units of the University Teaching Hospital Yaounde and the Central Hospital Yaounde. Two throat swabs were collected per patient. One was used for the rapid test and the other for standard bacteriological analysis. RESULTS: The prevalence of GAS in the study population was 22.5%. Out of the 71 samples collected, the RADT detected group A streptococcal antigens in 12 of 16 positive cultures giving a sensitivity of 75%. The specificity of the rapid test was 96%, with positive predictive value of 85.7%, and negative predictive value of 93% respectively. CONCLUSION: Rapid test may have an additional value in the management of patients with high risk of having GAS infection. However, tests with a higher sensitivity are needed for accurate and reliable results for early diagnosis of patients with sore throat caused by GAS.
Subject(s)
Bacteriological Techniques/methods , Pharyngitis/diagnosis , Streptococcal Infections/diagnosis , Streptococcus pyogenes/isolation & purification , Adolescent , Adult , Aged , Cameroon , Child , Child, Preschool , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Pharyngitis/microbiology , Predictive Value of Tests , Sensitivity and Specificity , Streptococcal Infections/microbiology , Young AdultABSTRACT
Introduction. L'objectif etait de determiner la proportion de souches de Pseudomonas aeruginosa (P. aeruginosa) exprimant des mecanismes de resistance dans la ville de Yaounde. Methode. Il s'agissait d'une etude prospective et descriptive realisee du 02 janvier au 30 juin 2012. Des souches de P. aeruginosa provenant de divers produits pathologiques de patients ont ete identifiees a l'aide de la galerie API 20NE (Biomerieux). Pour les prelevements urinaires; une cytologie etait faite pour verifier l'absence de cancer. La lecture interpretative de l'antibiogramme a ete faite par diffusion sur gelose Mueller-Hinton selon CA-SFM 2011. Resultats. Au total 34 souches de P. aeruginosa ont ete isolees dont 85;3?% chez patients hospitalises. Parmi ces souches; 41;2?% etaient isolees des urines; 23;5?% des hemocultures et 17;6?% des suppurations. Les urines montraient a l'examen cytologique des modifications inflammatoires aigues et l'absence de cancer. Le profil de resistance aux antibiotiques a montre une resistance elevee preferentielle des Beta-lactamines notamment a la ticarcilline (35;29?%). Concernant les Beta-lactamines; les phenotypes les plus observes ont ete pour les 2/3 sauvages et 26;5?% pour les penicillinases ; quant aux aminosides 94;1?% etaient de phenotype sauvage; tandis que 2/3 etaient de type sauvage pour les fluoroquinolones. Conclusion. Une association Beta-lactamines/aminosides ou Beta-lactamines/fluoroquinolones pourrait etre preconisee afin de lutter contre toute infection a P. aeruginosa
