Retrospective analysis of antimicrobial resistance and bacterial spectrum of infection in Gabon, Central Africa
1 Centre de Recherche Médicale de Lambaréné (CERMEL), Lambaréné, Gabon
2 Institut für Tropenmedizin, Eberhard Karls Universität, Tübingen, Germany
3 Institute of Medical Microbiology, University Hospital Münster, Münster, Germany
4 Department of Internal Medicine II, HELIOS-Clinic Krefeld, Krefeld, Germany
5 Center for Tropical Medicine and Travel Medicine, Department of Infectious, Diseases, Division of Internal Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
BMC Infectious Diseases 2013, 13:455 doi:10.1186/1471-2334-13-455Published: 2 October 2013
Physicians depend on reliable information on the local epidemiology of infection and antibiotic resistance rates to guide empiric treatment in critically ill patients. As these data are scarce for Central Africa, we performed a retrospective analysis of microbiological findings from a secondary care hospital in Gabon.
Microbiological reports from 2009 to 2012 were used to assess the non-susceptibility rates of the three most common isolates from six major types of infections (bloodstream, ear-eye-nose-throat, surgical site, skin and soft tissue, urinary tract and wound infection).
A high diversity of pathogens was found, but Staphylococcus aureus was predominant in the majority of infections. Overall, the three most prevalent pathogens in children were S. aureus (33.7%), Streptococcus pyogenes (8.1%) and Escherichia coli (4.5%) and in adults S. aureus (23.5%), E. coli (15.1%) and Klebsiella pneumoniae (7.4%). In total, 5.8% (n = 19) of all S. aureus isolates were methicillin resistant. The proportion of extended-spectrum beta-lactamase (ESBL) producing Enterobacteriaceae was 15.4% (n = 78), 49.4% of all K. pneumoniae were ESBL-producer (n = 42).
The high diversity of potential pathogens and high resistance rates in Gram-negative bacteria challenge a rational empiric use of antibiotics. Countrywide continuous sentinel surveillance is therefore urgently needed.