Legionellosis is a severe bacterial infection, most commonly presenting as pneumonia (Legionnaires' Disease), caused by Legionella bacteria. It is not contagious person-to-person and primarily affects individuals who inhale contaminated water droplets, especially older adults or those with weakened immune systems.
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Legionellosis first gained widespread recognition following a major outbreak in 1976 at an American Legion convention in Philadelphia, Pennsylvania. The causative bacterium, *Legionella pneumophila*, was identified by the CDC shortly after. This event significantly advanced public health understanding of waterborne diseases and the importance of environmental controls in buildings.
Legionellosis is primarily transmitted through the inhalation of small water droplets (aerosols) containing *Legionella* bacteria. These contaminated aerosols are generated from man-made water systems such as cooling towers, hot tubs, showers, decorative fountains, and large plumbing systems. It is not known to spread directly from person to person.
PerÃodo de Contagio: Varies by disease
5 countries with reported activity. Updated from real-time surveillance data.
Inteligencia en tiempo real de monitoreo global de salud y vigilancia impulsada por IA
Fuentes de datos: BEACON, ProMED, OMS, CDC y más de 50 agencias nacionales de salud
✓ Datos en vivo actualizados en tiempo real desde fuentes de salud globales
An ongoing cluster of the illness has sickened 23 people. That's not unusual: Most years, 200 to 700 people in the city are diagnosed with the disease.
Faced with an outbreak of Legionnaires' disease on Manhattan's Upper East Side, the Mamdani administration said on Tuesday that it was adopting new tactics to try to stamp out clusters of the bacterial illness more quickly.
The outbreak has sickened 23 people, leading to 17 hospitalizations. Legionnaires' disease is a form of pneumonia caused by
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This event envelope contains reports on Legionnaire's disease cases, clusters and outbreaks in Australia.
Source: BEACON - View Full Report
The second victim was an 88-year-old retired businessman and Air Force veteran who lived on the Upper East Side, his lawyer said.
A second person has died in an outbreak of Legionnaires' disease on the Upper East Side of Manhattan, city health officials said.
The death, of an 88-year-old man, was announced as officials said that they believed the source of bacteria that led to the outbreak had been eliminated after a cleanup of cooling towers in the neighborhood.
Since the health authorities f
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Early antibiotic treatment and proper water management in cooling towers and plumbing can prevent severe illness
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As continues to investigate an outbreak of Legionnaires' disease that has claimed multiple lives and sickened dozens of people, doctors say there are ways people can reduce the risk of exposure.
As of July 21, there have been five deaths and 82 diagnoses linked to the Upper East Side outbreak, according to the New York City Department of H
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The New York City Health Department has launched a probe into a concerning cluster of Legionnaires' disease cases along the Upper East Side -- with officials trying to track down the source of the outbreak.
Two people have been diagnosed with the potentially fatal pneumonia-like illness in the neighborhoods of Carnegie Hill and Yorkville as of Thursday, with possible additional cases pending test results, according to the health department.
Authorities are asking New Yorkers who have lived, wor
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ST. LOUIS COUNTY, Mo. - An elementary school in the Ritenour School District will remain closed after a teacher there disclosed that she had been hospitalized for Legionnaires' disease during the school year.
In separate statements to staff and families in the district and Marvin Elementary School, Superintendent Dr. Chris Kilbride said administrators learned late Tuesday evening that a teacher said she was ill in late April and early May and had been hospitalized for Legionnaires.
The teacher
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The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results.
Hamilton Public Health is investigating several confirmed cases of legionellosis in the city's east end and Stoney Creek area.
In a news release Friday, the city said 13 cases of legionellosis -- a lung infection caused by legionella bacteria -- have been reported since May 4. Public health officials are working to id
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This event envelope contains reports on legionellosis in Canada.
Source: BEACON - View Full Report
Tim Fang is a digital producer at CBS Bay Area. A Bay Area native, Tim has been a part of the CBS Bay Area newsroom for more than two decades and joined the digital staff in 2006.
A hospital in Santa Clara County is working to find the source of contamination that led to several people being infected by Legionella bacteria.
Officials at Kaiser Permanente Santa Clara said Tuesday they have confirmed several cases of people being infected by the bacteria. Legionella occurs naturally in water and
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This envelope includes reports on legionellosis (clusters and outbreaks) in the United States.
Source: BEACON - View Full Report
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Información confiable de las principales organizaciones de salud
Orientación oficial de los Centros para el Control y la Prevención de Enfermedades de EE. UU.
Ver Recursos del CDC →Vigilancia global de enfermedades y directrices de la Organización Mundial de la Salud
Ver Recursos de la OMS →Últimas investigaciones revisadas por pares y estudios clÃnicos
Ver Investigación →La información sobre enfermedades en Virus Watcher es revisada por nuestro Epidemiólogo Jefe, ex analista principal del CDC para el pronóstico FluSight. Los datos de brotes se agregan de fuentes verificadas incluyendo BEACON, ProMED, OMS, CDC y más de 50 agencias nacionales de salud. Esta información es con fines educativos y no debe reemplazar el asesoramiento médico profesional.
Última revisión: 2026-08-13
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