Hrvatske vode, Vol. 29 No. 116, 2021.
Izvorni znanstveni članak
Legionellae Survival in Seawater
Dijana Tomić Linšak
orcid.org/0000-0002-8379-5675
; Sveučilište u Rijeci, Medicinski fakultet, Rijeka, Hrvatska
Andrea Gašaj
; Sveučilište u Rijeci, Medicinski fakultet, Rijeka, Hrvatska
Ivana Gobin
; Sveučilište u Rijeci, Medicinski fakultet, Rijeka, Hrvatska
Sažetak
Legionellae primarily appear in water environments, mostly artificially created, such as warm water systems, Jacuzzis, recreation pools, air conditioning systems, etc. It is well known that legionellae survive in freshwater systems; however, their survival in water with high salt concentrations has not been researched in detail. In vitro tests in this study examined the survival of Legionella in samples of seawater, potable water and chlorinated water from a saltwater pool. We used two bacterial strains - Legionella pneumophila ATCC BAA-74 as the clinical isolate and Legionella pneumophila ST82 isolated from the saltwater pool.
Both bacteria survive over 30 days in raw seawater and potable water. In filtered seawater, L. pneumophila strain ST82 survives over 30 days, whereas L. pneumophila ATCC BAA-74 dies within 25 days. An important factor for the survival of both strains is a dilution of chlorinated seawater with non-chlorinated potable water. Our results indicate that a constant control and adherence to water managing protocols are essential in hotel systems, and that additional protocols for saltwater pools are necessary. Only adequate hygiene and monitoring processes can lead to a significant risk reduction of the occurrence and spread of Legionnaires’ disease.
Ključne riječi
Legionella pneumophilla, seawater, bacterial survival
Hrčak ID:
261220
URI
Datum izdavanja:
30.6.2021.
Posjeta: 1.144 *