Related Experiment Videos
[Unusual sources of L. pneumophila in hospital environment]
1Dip. di Igiene, Medicina Preventiva e Sanità Pubblica R. De Blasi, Università di Messina.
Abstract:
Owing to the very frequent reports of Legionella's cases arising in italian hospitals we have done a microbiologic monitoring on some equipments utilized in a several ward, what represent a potential source of diffusion of germ. It has been analysed water collected from 135 bubblers for oxygen-therapy, 11 pediatric incubators and 10 dental chairs. The isolated strains ware 31 (19.23%), of which: 3 L. Pneumophila sgr. 1; 11 sgr. 3; 8 sgr. 6; 2 sgr. 7. For 6 strains identified as Legionella, have not been possible to establish sgr.
Insights
Legionella bacteria were detected in 19.23% of hospital equipment, including oxygen therapy bubblers, incubators, and dental chairs. This highlights potential risks for patient infection and the need for enhanced environmental monitoring in healthcare settings.
Area of Science:
- Environmental microbiology
- Hospital-acquired infections
- Public health
Background:
- Frequent reports of Legionella cases in Italian hospitals indicate a significant public health concern.
- Healthcare environments harbor potential sources for the diffusion of pathogenic microorganisms like Legionella.
Purpose of the Study:
- To conduct microbiological monitoring of equipment in a hospital ward to identify potential Legionella contamination.
- To assess the prevalence of Legionella in water sources used for patient care.
Main Methods:
- Water samples were collected from 135 oxygen-therapy bubblers, 11 pediatric incubators, and 10 dental chairs.
- Microbiological analysis was performed to isolate and identify Legionella strains, including serogroup determination.
Main Results:
- Legionella was isolated from 31 samples (19.23%) of the analyzed equipment.
- Identified serogroups included L. Pneumophila sgr. 1 (3 strains), sgr. 3 (11 strains), sgr. 6 (8 strains), and sgr. 7 (2 strains).
- Serogroup could not be determined for 6 isolated Legionella strains.
Conclusions:
- Hospital equipment, particularly water-associated devices, can be a reservoir for Legionella.
- The presence of Legionella in these settings poses a risk for healthcare-associated infections.
- Regular environmental monitoring and disinfection protocols are crucial to mitigate Legionella transmission in hospitals.