Format

Send to

Choose Destination
See comment in PubMed Commons below
Epidemiol Infect. 2015 Apr;143(6):1322-31. doi: 10.1017/S0950268814001964. Epub 2014 Aug 1.

Community outbreak of legionellosis and an environmental investigation into a community water system.

Author information

1
Consumer, Environmental and Occupational Health Service, New Jersey Department of Health, Trenton, NJ,USA.
2
Communicable Disease Service, New Jersey Department of Health, Trenton, NJ,USA.

Abstract

During two legionellosis outbreak investigations, one at a geriatric centre and the other in high-rise housing for seniors, it was observed that additional cases of legionellosis occurred in nearby smaller residential settings. This apparent geographical cluster of legionellosis occurred in the same general area of a community water storage tank. No potential airborne sources in or near the area could be identified, but a community water system storage tank that was centrally located among case residences spurred an investigation of water-quality factors in the identified investigation area. Conditions conducive for Legionella growth, particularly low chlorine residuals, were found. The rate of legionellosis among residents aged ⩾50 years in the investigation areas (61·0 and 64·1/100 000) was eight times higher than in the rest of the service area (9·0/100 000) and almost 20 times higher than the statewide annual average incidence rate (3·2/100 000). A water mains flushing programme in the area was launched by the water utility, and water samples taken before and during flushing found L. pneumophila.

KEYWORDS:

water (quality)

PMID:
25083716
DOI:
10.1017/S0950268814001964
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Cambridge University Press
    Loading ...
    Support Center