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J Clin Microbiol. 1975 December; 2(6): 486–497.
PMCID: PMC275209

Nationwide epidemic of septicemia caused by contaminated intravenous products: mechanisms of intrinsic contamination.

Abstract

Between 1 July 1970 and April 1971, in many hospitals in this country, there were outbreaks of nosocomial septicemia caused by Enterobacter cloacae of E. agglomerans (formerly Erwinia, herbicola-lathyri). All of these hospitals used infusion products manufactured by one company, Abbott Laboratories, and all affected patients had onset of septicemia while receiving the company's infusion products. Septicemia was epidemiologically and microbiologically traced to intrinsic contamination of the company's screw-cap closure for infusion bottles which was sealed with a newly introduced elastomer liner. Epidemic organisms were isolated from these closures. Investigations both in the laboratory and in the manufacturing plant into the mechanism of contamination of these products revealed the following. (i) Epidemic strains were present in numerous areas throughout the manufacturing plants. (ii) Viable microorganisms gained access to the interior of screw-cap closures after the autoclave step of production. (iii) Cooling closures actively drew moisture through the thread interstices into the inner-most depths of the closure. (iv) Transfer of contaminants from closures to fluid was easily effected by simple manipulations duplicating normal in-hospital use. (v) The red-rubber liner used in the company's screw-cap closures before the introduction of elastomer contained a broad-spectrum antimicrobial inhibitor. The findings from this epidemic and the associated studies show that the screw-cap closure as it is now designed cannot be considered secure for products that must remain sterile.

Full text

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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Articles from Journal of Clinical Microbiology are provided here courtesy of American Society for Microbiology (ASM)