Abstract
The biochemical, serological, and epidemiological characteristics of 95 strains of Serratia marcescens isolated at the Boston City Hospital were examined. Several strains were shown to be endemic, and the majority of isolates were cultured from urine or respiratory secretions. Serratia species were highly resistant to polymyxin B and the cephalosporins, and various proportions were also resistant to other antibiotics including kanamycin, but all of the isolates were sensitive to gentamicin. The appearance of resistance to kanamycin and nalidixic acid among endemic strains was demonstrated. The nosocomial nature of Serratia infections, particularly those involving the urinary tract, was confirmed. Many clinical bacteriology laboratories currently fail to identify the nonpigmented strains.
MeSH Terms
Boston
Cephalosporins/pharmacology
Cross Infection/microbiology
Culture Media
Drug Resistance, Microbial
Enterobacteriaceae Infections/microbiology
Feces/microbiology
Female
Gentamicins/pharmacology
Hospitals, General
Humans
Infant
Infant, Newborn
Kanamycin/pharmacology
Male
Microbial Sensitivity Tests
Middle Aged
Nalidixic Acid/pharmacology
Pigmentation
Polymyxins/pharmacology
Respiratory Tract Infections/microbiology
Serotyping
Serratia marcescens/analysis,classification,drug effects,isolation & purification
Species Specificity
Sputum/microbiology
Urinary Tract Infections/microbiology
Urine/microbiology
Wounds and Injuries/microbiology
Chemicals
Cephalosporins
Culture Media
Gentamicins
Polymyxins
Nalidixic Acid
Kanamycin
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Wilfert J N
Barrett F F
Ewing W H
Finland M
Kass E H
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