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Recent Legionnaires’ Disease Outbreaks

2 Cases in Duluth, Minnesota – December 2022
2 confirmed cases of Legionnaires’ disease were reported among residents of a senior apartment complex in Duluth, Minnesota, 1 in October and the second in December. Minnesota’s health department issued an advisory for Duluth and adjacent counties.

7 Cases in Passaic and Bergen Counties, New Jersey – December 2022
Seven cases of Legionnaires’ disease were reported in New Jersey’s Passaic and Bergen counties over a six-week period in November and December. The patients consisted of 6 men and 1 woman between the ages of 52 and 77. An investigation was conducted by state and local health agencies.

60 Cases and 11 Deaths in Latvia – December 2022
As of December 19, 60 cases of Legionnaires’ disease had been reported in Latvia in 2022, 11 of which were fatal. Facility managers and health officials cited attempts to save costs by keeping water heaters off for longer durations, or at lower temperatures.

Multiple Cases in Baldwin County, Alabama – December 2022
County health officials investigated an outbreak of Legionnaires’ disease at a Baldwin County condominium complex. More than a dozen cases had been reported over the last few months.

4 Cases in Pennsauken, New Jersey – December 2022
In November and December, 2022, Legionnaires’ disease was reported in 4 people aged 30-86 years who lived within one mile of each other in Pennsauken, New Jersey. County and State health officials launched an investigation.

13 Cases in Darlington County, South Carolina – November 2022
Darlington County, South Carolina had 13 confirmed cases of Legionnaires’ disease in November, 2022. The local health department launched an investigation and urged residents to be on the lookout for symptoms.

35 Cases and 1 Death in Orillia, Ontario, Canada – October 2022
35 cases of Legionnaires’ disease have emerged from the region around Orillia, Ontario, Canada, with 1 case resulting in fatality. Local health officials launched an investigation to find the source of the outbreak and all city cooling towers were disinfected and inspected.

2 Cases in Hong Kong – October 2022
2 cases of Legionnaires’ disease have been confirmed in Hong Kong between September 25 and October 1, 2022. The patients were a male aged 98 and a female aged 67, living in different parts of the city. Investigations are being conducted to identify bacterial sources.

8 Cases and 5 Deaths at a Nursing Home in New York – September 2022
8 residents of a nursing home in Manhattan were diagnosed with Legionnaires’ disease between June and September 2022; 5 of which have since died. Health officials are still investigating the bacteria’s source.

5 Cases and 1 Death in Franklin and Grand Isle Counties, Vermont – September 2022
5 residents of Vermont’s Franklin and Grand Isle Counties were diagnosed with Legionnaires’ disease, 1 of whom has died. An investigation is ongoing.

22 Cases and 6 Deaths in Tucuman, Argentina – September 2022
Between August 18-25, 22 cases of Legionnaires’ disease were confirmed at a medical facility in Tucuman, Argentina. 6 of the cases have resulted in death.

4 Cases in Burbank, Illinois – September 2022
4 confirmed cases of Legionnaires’ disease were allegedly tied to a church in Burbank, Illinois between June and August 2022. The building’s cooling tower was shut down until remediation was finished.

4 Cases and 1 Death in Hamilton Township, New Jersey – August 2022
4 confirmed cases of Legionnaires’ disease and 1 death occurred in Hamilton Township, New Jersey between December 2021 and August 2022. As part of the investigation, several buildings as well as private homes were tested for Legionella.

2 Cases at a Hotel in San Jose, California – August 2022
A couple staying at a hotel in San Jose, California, contracted Legionnaires’ disease and were hospitalized over the summer. Health officials launched an investigation, testing water from the pool and hot tub, and found Legionella in the spa filter. The spa area was closed until remediation efforts were completed.

3 Cases and 1 Death in Montreal – August 2022
3 confirmed cases of Legionnaires’ disease, with 1 death, were reported in the Anjou and Mercier-Est regions of Montreal, Canada between July 29 and August 8. An investigation is underway by local health officials to determine if there is a common source, with the focus on area cooling towers.

7 Cases at a Senior’s Home in Montreal – August 2022
Seven residents of a senior citizen home in the Dollard des Ormeaux region of Montreal, Canada have been diagnosed with Legionnaires’ disease. Thus far, of the seven, two have been admitted to the hospital while the others are recovering at home.

13 Cases and 1 Death in Napa County, California – July 2022
Between July 11-27, 13 cases of Legionnaires’ disease were reported among people who live in the same area of Napa County, California, 1 of whom has died. Cooling towers were apparently the focus of the health department’s investigation.

Hotel Guests in Wake County, North Carolina – June 2022
2, possibly 3, guests of a hotel in Wake County, North Carolina, were diagnosed with Legionnaires’ disease. Local health officials launched an investigation and advised all recent guests to watch for symptoms.

UPDATED – 30 Cases and 2 Deaths in Highbridge, The Bronx, New York – June 2022
There were 30 confirmed cases of Legionnaires’ disease, including 2 deaths, from the Highbridge, Bronx neighborhood. Health officials found Legionella bacteria in four cooling towers in the neighborhood. Remediation on those cooling towers has been completed.

6 Cases in Sydney CBD, Australia – May 2022
6 people over the past 3 weeks have been diagnosed with Legionnaires’ disease in Sydney CBD, Australia. All patients visited the same locations in the 10 days prior to their diagnoses, and all were hospitalized. The local health department investigated more than 120 cooling towers, 6 of which have been identified for corrective measures.

UPDATED – 5 Cases at a Resort in Waikiki, Hawaii – May 2022
5 guests of a resort in Waikiki, Hawaii were diagnosed with Legionnaires’ disease over the last year. The first case was reported in June 2021. One case was identified in March 2022, two in April, and one in late May 2022. The state health department has launched an investigation.

4 Cases in Camden and Narellan, Sydney, Australia – April 2022
Four cases of Legionnaires’ disease were reported to health officials in the Camden and Narellan sections of Sydney, Australia between March and April 2022. The patients were all men in their 60s and 70s. Investigators have not yet determined the source of the cases.

20 cases and 2 deaths in Palm Springs and Palm Desert, California – March 2022
At least 20 confirmed cases of Legionnaires’ disease were reported in California’s Coachella Valley from the fall of 2021 through the first quarter of 2022. 14 of the individuals were hospitalized, and 2 have died. The state Department of Public Health and CDC launched an investigation into the outbreak, though the source is still unknown. In late March 2022, the county health department shut down several area pools and hot tubs.

4 cases in Missouri – May 2021 – January 2022
Between May of 2021 and January 2022, a hospital in Missouri had four confirmed cases of Legionnaires’ disease. The facility launched an investigation, having its water system surveyed and tested.

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