Environmental survivability and surface sampling efficiencies for Pseudomonas aeruginosa on various fomites.

Tia M. Jones, Eric A. Lutz

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The study described in this article evaluated surface survivability of culturable Pseudomonas aeruginosa by time and type (glass, stainless steel, and laminate) using two sampling techniques: contact plates and surface swabs. Recovery of P. aeruginosa decreased logarithmically over time and varied by surface type. P. aeruginosa survival averaged 3.75, 5.75, and 6.75 hours on laminate, glass, and stainless steel, respectively. Culturable P. aeruginosa loss on stainless steel and glass were not different (p > .05); however, laminate had significantly greater loss at each time point than either glass or stainless (p < .05). A comparison of surface swab and contact plate collection efficiencies found no significant difference for laminate surfaces. Swabs, however, had a higher collection efficiency than contact plates (p < .05). For the first time, the authors report P. aeruginosa mean survival time of 3.75-6.75 hours on clinically relevant surfaces, with P. aeruginosa on stainless steel surviving the longest. Their data also indicate that culturable surface sampling appears to most accurately represent actual P. aeruginosa surface loading when swab sampling is used.

Original languageEnglish (US)
Pages (from-to)16-20
Number of pages5
JournalJournal of environmental health
Volume76
Issue number9
StatePublished - May 2014
Externally publishedYes

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Management, Monitoring, Policy and Law
  • Health, Toxicology and Mutagenesis

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