Prevalence, identification and distribution of various species of enterococci isolated from clinical specimens with special reference to urinary tract infection in catheterized patients.

ABSTRACT

Various clinical specimens were processed to find the prevalence rate of enterococci and to identify the species of clinical isolates of enterococci. Screening of various clinical specimens revealed that enterococci were prevalent in 22.19% of the total specimens, with Foley's catheters and burn wounds to be the major site of isolation. High rate of colonization was noted as opposed to infection. Conventional test scheme proposed by Facklam and Collins were successfully used to speciate enterococcal strains. Seven species of enterococci were identified in the study from a set of 202 cultures, with E.faecalis (49.50%) and E. faecium (35.64%) predominating. E. avium (9.40%), E.hirae (2.47%), E.raffinosus (1.98%) and one isolate each of E.gallinarum and E. casseliflavus were the other members of Enterococcus species identified. Urinary tract infection (UTI) by enterococci due to catherisation was found in 8.92% of the patients and is probably the result of high rate of colonization of Foley's catheters and use of broad-spectrum antibiotics.