Outbreaks of Legionnaires' Disease

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Most Recent Outbreaks

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Travelers to Greece, 9 cases, Aug.-Oct. 2011

Nine cases of LD have been identified in the UK among people who had traveled to the Greek island Corfu since August. UK and Greek public health officials are investigating potential sources in both the UK and Corfu.  Top

Pittsburgh nursing homes, 10 cases, Sept. 2011

In September the Allegheny County (Pennsylvania) Health Department initiated an investigation of the domestic water systems in two nursing homes where a total of 10 cases of Legionnaires' disease were identified. Three of the cases required hospitalization but no deaths were reported. Source: pittsburghlive.com.  Top

Hotel in Ocean City, MD, 3 cases, Sept. 2011

A hotel in Ocean City, Maryland relocated its guests to other Ocean City hotels and closed early for the season, on September 29th, after the Maryland Department of Health and Mental Hygiene (DHMH) reported three cases of Legionnaires' disease among people who had stayed there. Each of the three cases developed Legionnaires' symptoms about a week after their stay at the hotel and were hospitalized.  Top


Hamilton, Ontario, 4 cases, Aug.-Sept. 2011

Health officials are investigating four cases of Legionnaires' disease, the first of which was reported in mid August and the other three since Sept. 22, to determine whether there is a common source. The investigators focused on cooling towers located on the east side of the city. Source: thespec.com  Top

UK hospital, Aug. 2011

In August the UK's Health and Safety Executive, as well as the police, investigated a fatal case of Legionnaires' disease that occurred in a patient of an Essex hospital where three other patients died from Legionella infections in the last nine years. Three cases were identified at the hospital in 2010, one of which was fatal. The hospital said that it has been disinfecting and monitoring its plumbing system since the first case of Legionnaires' was identified there in 2002. Sources: basildonrecorder.co.uk and bbc.co.uk  Top


Travelers to Italy, 17 cases, July-Aug. 2011

Seventeen cases of Legionnaires' disease were reported in travelers who stayed at two campsites and three hotels in Lazise, Italy between early July and the end of August. Their ages ranged from 42 to 78 years. Sixteen of the cases were confirmed by urinary antigen tests. None of the cases resulted in death. The cases were discovered through the European Legionnaires' Disease Surveillance Network (ELDSNet).  Top

Shredding plant workers, July 2011

The National Institute for Occupational Safety and Health (NIOSH) recently investigated five cases of Legionnaires' Disease in workers at a shredding plant in upstate New York. The last of the five cases was identified in July. Legionella was found in water samples collected from several pools of standing water, in water dripping from the shredder (Water is used for cooling and lubrication in the shredders.), and on swabs of a conveyor belt. The investigators believed that standing water was the source of contamination. All the workers who were Legionella-positive worked around standing water or near a conveyor. The NIOSH report, dated July 22, 2011, recommended that all standing water be eliminated in the facility and on the grounds, that workers in the areas where cases occurred wear respirators, and that conveyors be disinfected with chlorine. Source: Times-Shamrock  Top


Las Vegas hotel, July 2011

Legionnaires' disease was reported in guests of a hotel on the Las Vegas strip this month. Health officials investigated the same hotel last year after reports of the disease. Legionella was found in the hot water system in several guest rooms.  Top

Cleveland nursing home, 3 cases, June 2011

Three residents of a Cleveland nursing and rehab facility were hospitalized with Legionnaires' disease in June. The facility provided bottled drinking water and restricted showers until the water system was disinfected. Source: cleveland.com  Top


New Zealand, 3 cases, April 2011

Three New Zealand men who worked near one another contracted Legionnaires' disease in April. Health officials focused their investigation on cooling towers. Source: radionz.co.nz  Top

Hotel in Scotland, Mar. 2011

A hotel in Scotland closed its an indoor heated pool and spa and other "leisure club" facilities in March after employees and guests reported flu-like symptoms. One person was hospitalized with confirmed Legionnaires' disease. In all, 112 people contracted a flu-like illness with respiratory infection. Top

Playboy mansion, Feb. 2011

According to the Los Angeles County Health Department, about 200 people who attended a February 3rd fundraiser at the Playboy Mansion were infected by Legionella bacteria. Four of them contracted Legionnaires' disease; the rest had Pontiac fever, a flu-like illness that lasts about three days. News reports mentioned a fog machine at the event. [Pontiac fever has a much higher attack rate than does Legionnaires' disease, > 90% as opposed to < 5%, and a shorter incubation period, usually 6-48 hours as opposed to 2-14 days. -- mrf]  Top

Ohio hospital, 4 cases, Feb. 2011

Four heart patients of a new hospital in Ohio were diagnosed with confirmed Legionnaires' disease this month, three of whom have been discharged. The hospital is investigating the plumbing system in its new patient tower, which began admitting patients in late December.  Top

Eye clinic in UK, 3 cases, Jan. 2011
An outpatient eye clinic operated at a hospital in the UK was closed for the first three weeks of this year after a staff member and two of its patients were diagnosed with Legionnaires' disease. The results of the investigation were not reported. Source: Ealing Gazette  Top