Abstract
Twenty-one confirmed cases of Legionnaires’ disease (Legionella pneumophila serogroup 1) were identified in the Stoke-on-Trent area of England with onsets since 2 July 2012. Sequence-based typing results are available for nine cases; all are a unique type (ST1268). Initial interviews highlighted a number of possible environmental sources. Inspection of premises of interest revealed an operating spa pool on display, from which the outbreak strain was identified. All cases had visited the retail premise with this spa pool.
Highlights
On 20 July 2012, public health authorities in the West Midlands, England, were notified of two confirmed cases of Legionnaires’ disease (LD) in Stoke-on-Trent residents admitted to the local hospital in the previous week
Regular letters were sent to all general practitioners (GPs) in the local area asking for vigilance in detecting potential cases, all surrounding hospitals and laboratories were informed to be vigilant and report associated cases, all Health Protection Units across England were briefed, and all national Legionella case reports reviewed
A confirmed case was defined in accordance with the definitions from the European Centre for Disease Prevention and Control (ECDC) as a person with clinical or radiological evidence of pneumonia and laboratory confirmation by culture of Legionella pneumophila, by detection of L. pneumophila urinary antigen or by seroconversion against L. pneumophila serogroup1 [1], and with both an onset date after 30 June 2012 and a history of living in or visiting the Stoke-on-Trent area in the 14 days before onset
Summary
An outbreak of Legionnaires’ disease associated with a display spa pool in retail premises, Stoke-on-Trent, United Kingdom, July 2012. Twenty-one confirmed cases of Legionnaires’ disease (Legionella pneumophila serogroup 1) were identified in the Stoke-on-Trent area of England with onsets since 2 July 2012. On 20 July 2012, public health authorities in the West Midlands, England, were notified of two confirmed cases of Legionnaires’ disease (LD) in Stoke-on-Trent residents admitted to the local hospital in the previous week. Initial interviews identified no possible shared exposures, and indicated that neither patient had travelled abroad or in the United Kingdom (UK) during their incubation periods. Regular letters were sent to all general practitioners (GPs) in the local area asking for vigilance in detecting potential cases, all surrounding hospitals and laboratories were informed to be vigilant and report associated cases, all Health Protection Units across England were briefed, and all national Legionella case reports reviewed
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