Associated risk factors and pulsed field gel electrophoresis of nasal isolates of Staphylococcus aureus from medical students in a tertiary hospital in Lagos, Nigeria
Braz. j. infect. dis
;
11(1): 63-69, Feb. 2007. tab, graf
Artigo
em Inglês
| LILACS
| ID: lil-454684
ABSTRACT
Staphylococcus aureus infections are growing problems worldwide with important implications in hospitals. The organism is normally present in the nasal vestibule of about 35 percent of apparently healthy individuals and its carriage varies between different ethnic and age groups. Staphylococcal nasal carriage among health workers is particularly important to establish new clones and track origin of infections during outbreak situations. To determine the carriage rate and compare the pulsed field gel patterns of the strains, nasal swabs were collected from 185 medical students in a teaching hospital in Lagos, Nigeria. Isolates of S. aureus were tested for heamolysin production, methicillin sensitivity and Pulsed Field Gel Electrophoresis (PFGE) was performed. The results showed S.aureus nasal carrier rate of 14 percent with significant rate among males compared to females. All the isolates produced heamolysin. Antibiotic susceptibility pattern revealed that majority of the isolates was susceptible. Five strains (19 percent) harboured resistant determinants to penicillin and tetracycline. None of the strains was resistant to methicillin. 44 percent of the isolates typed by PFGE had type B, the most predominant pulsotype. PFGE A clone exhibited a single resistance phenotype suggesting a strong clonal relationship that could punctual an outbreak in the hospital. The results speculate that nasal carriage among medical personnel could be a function of various risk factors. Personal hygiene and behaviour may however be the means to reducing colonization and spread of S.aureus in our hospitals.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Infecções Estafilocócicas
/
Staphylococcus aureus
/
Portador Sadio
/
Resistência a Meticilina
/
Antibacterianos
/
Cavidade Nasal
Tipo de estudo:
Estudo de etiologia
/
Fatores de risco
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
País/Região como assunto:
África
Idioma:
Inglês
Revista:
Braz. j. infect. dis
Assunto da revista:
Doenças Transmissíveis
Ano de publicação:
2007
Tipo de documento:
Artigo
País de afiliação:
Nigéria
Instituição/País de afiliação:
Nigerian Institute of Medical Research/NG
/
University of Lagos/NG
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