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Fungal and Bacterial Contamination on Indoor Surfaces of a Hospital in Mexico

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avatar Cesar Pastor Garcia-Cruz 1 , avatar Maria Josefina Najera Aguilar 2 , avatar Omar Elind Arroyo-Helguera 3 , *

1 Institute of Public Health, Universidad Veracruzana, Luis Ayala Avenue Castelazo S / N. Xalapa, Veracruz, Mexico.C.P. 91020, Mexico

2 Xalapa ISSSTE Hospital Clinic, Esq Fraternity Jose Hernandez, Col. Obrero Campesina C.P. 91020, Xalapa, Mexico

3 Institute of Public Health, Universidad Veracruzana, Luis Ayala Avenue Castelazo S / N. Xalapa, Veracruz, Mexico.C.P. 91020, [email protected], Mexico

How to Cite: Garcia-Cruz C, Najera Aguilar M, Arroyo-Helguera O. Fungal and Bacterial Contamination on Indoor Surfaces of a Hospital in Mexico. Jundishapur J Microbiol.5(3): 460-464.
doi: 10.5812/jjm.2625.

ARTICLE INFORMATION

Jundishapur Journal of Microbiology: 5 (3); 460-464
Article Type: Research Article
Received: October 6, 2011
Accepted: January 12, 2012
DOI: 10.5812/jjm.2625
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Abstract

Background: Nosocomial infections acquired during hospitalization depend on the characteristics of the microorganisms, with a high risk of these being acquired when the environment is contaminated. Cross-transmission of microorganisms by contaminated surfaces and the hands of health care workers are considered to be the main route of the spread of nosocomial infections and in many Mexican hospitals, information about microbial and fungi contaminants on indoor surfaces is insufficient.
Objectives: In this study, we explore the bacterial and fungal genera present on surfaces taken from; armrest beds, wash sinks, medical tables, and the hands of medical staff from emergency, intensive care unit, inhalation therapy, stomatology and pediatric areas.
Materials and Methods: The present study was conducted in a hospital located in Xalapa City in Mexico; the samples were taken during a 6 month period from August to December, 2010. Surface swab specimens were collected from predefined surfaces with cotton tipped applicators, pre-moistened with sterile saline and inoculated on Sabouraud dextrose or selective Eosin-Methylene Blue agar plates and incubated for 1 to 7 days at 28°C or 37°C in three triplications in order to isolate bacterial and fungal contaminants.
Results: We isolated and identified gram-negative bacteria and fungi and the results showed that the predominant bacteria were; Klebsiella spp. Pseudomonas spp. and E coli spp. The predominant genera of fungi were; Cladosporium spp. Microsporum canis., Aspergillus spp. and Penicillium spp.
Conclusions: This study showed that all areas of the hospital have pathogenic fungi and bacteria, indicating that these are a potential source of cross-infection from the hands of health care workers to their patients.

Implication for health policy/practice/research/medical education:
Identification of bacterial and fungal contamination in indoor surfaces would be the key elements in order to evaluate the effectiveness of aseptic techniques that can be applied and contribute to better preventive measures against infectious diseases caused by nosocomial pathogens.
Please cite this paper as:
Garcia-Cruz CP, Najera Aguilar MJ, Arroyo-Helguera OE. Fungal and Bacterial Contamination on Indoor Surfaces of a Hospital in Mexico. Jundishapur J Microbiol. 2012;5(3):460-4. DOI: 10.5812/jjm.2625

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