Visitors to Central Park on the Upper East Side are being advised to be vigilant for symptoms of Legionnaires’ disease, which has been reported in several locations and can be life-threatening.
As of Sunday, 14 individuals have been diagnosed with this pneumonia-like illness at Carnegie Hall and in Yorkville, a significant increase from just two cases on Thursday, according to health officials.
“Legionellosis is serious but can be effectively treated if recognized early,” stated Dr. Alistair Martin, New York City Health Commissioner.
“We urge everyone to be on the lookout for flu-like symptoms and reach out to their healthcare provider if they notice anything unusual,” he added. “Furthermore, we recommend that anyone who has spent time on the east side of Central Park, between East 76th and East 97th Streets, since late June should also keep an eye on their health for symptoms.”
There’s also a precaution for those who have lived, worked, or visited these impacted areas since late June, particularly in zip codes 10028, 10128, and 10075.
Health authorities suspect that a contaminated cooling tower nearby might be the source of the outbreak, though it remains unclear which one is responsible.
Last year, Harlem experienced a similar outbreak that led to seven fatalities, 90 hospitalizations, and a total of 114 confirmed cases.
Here’s a closer look at this serious infection.
What is Legionnaires’ disease?
Legionnaires’ disease is a severe pneumonia caused by Legionella bacteria that infect the lungs. Although it’s rare, its incidence has been increasing across the United States, with reported cases rising ninefold since 2000.
Annually, it’s estimated that between 8,000 and 18,000 Americans are hospitalized due to this infection, with many more likely going undiagnosed.
How do I get Legionnaires’ disease?
Legionella bacteria are naturally found in environments like lakes and streams but can become harmful when they proliferate in man-made water systems.
City officials indicate that the bacteria typically thrive in cooling towers, decorative fountains, hot tubs, humidifiers, and large air conditioning systems.
Most infections happen from inhaling small droplets of contaminated water—often from shower sprays or even accidentally while drinking. Good news: It’s not spread from person to person.
Dr. Norman Ng, an emergency physician, noted that “the risk of developing Legionnaires’ disease is low for most healthy individuals.” However, it’s particularly concerning for older adults, smokers, and those with certain medical conditions. Proper maintenance of water systems can help reduce risk.
What are the symptoms of Legionnaires’ disease?
Symptoms typically emerge two to ten days after exposure to Legionella.
The onset often includes headache, muscle pain, and fever, which can escalate to 104 degrees.
As the infection progresses, additional symptoms may arise:
- Cough, sometimes producing mucus or blood
- Shortness of breath
- Chest pain
- Nausea, vomiting, diarrhea
- Confusion or other cognitive changes
This disease primarily impacts the lungs but can also lead to infections in wounds and the heart.
A milder version, Pontiac fever, includes fever, chills, headache, and muscle aches, without affecting the lungs, and usually resolves within a week.
Is treatment available?
The good news is that antibiotics can effectively treat the infection, alleviating symptoms, particularly when paired with proper rest, hydration, and sometimes oxygen in severe cases.
Dr. Ng emphasized that “it’s treatable with antibiotics, and most individuals recover with appropriate care.” However, those over 50, smokers, and individuals with chronic health issues need to be particularly cautious.
Without treatment, it can lead to severe pneumonia and respiratory issues.
With timely medical intervention, most patients recover completely, although it can take weeks to regain full health.
The overall mortality rate for Legionnaires’ disease is around 10%, though it tends to be higher among hospitalized patients and those with pre-existing health conditions.
