Protecting families from contaminated food and water
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Protecting families from contaminated food and water
Posted in Our Blog,Outbreaks & Recalls on August 24, 2026
Two more Legionnaires’ disease deaths in NYC have been connected to the Upper East Side cooling tower outbreak bringing the total number of deaths to nine. The outbreak impacting the Upper East Side neighborhoods of Carnegie Hill and Yorkville has come to an end with no new cases in the last month. However, those still hospitalized are fighting for their lives.
Two more did not win their battles. One other may still be hospitalized.
Let’s recap when led up to the Legionnaires’ disease deaths in NYC this summer!
It all started on July 2, 2026. Two confirmed cases of Legionnaires’ disease were reported in the Upper East Side area of NYC. By July 5, a few more cases were reported and the zone was widened from 10028 and 10128, to include 10075 as well.
Prompt sampling activities and disinfection of cooling towers began on July 6. It was all hands on deck as every available person canvased registered (and a few unregistered) cooling towers in the exposure zone. Taking samples and discussing disinfection plans.
By July 12, a significant number of cases made it to the ongoing NYC Health Legionnaires’ disease page. At least 59 people were sick with this pneumonia-like infection.
People wanted answers. Shortly after, they got them.
On July 13, the City released a list of buildings with cooling towers positive for Legionella bacteria (the germ responsible for Legionnaires’ disease). It was updated again the following day. 77 cooling towers screened positive for Legionella bacteria. Cultures confirmed 59 cooling towers contained live Legionella bacteria at the time of sampling.
The first death was reported on July 17. Two days later it was three. Then five.
By July 29, 2026, six deaths there were six Legionnaires’ disease deaths in NYC associated with this outbreak!
On July 31, NYC Health issued a statement that the Upper East Side Legionnaires’ disease outbreak investigation was closed, as no new cases were reported since July 21, 2026. Cooling towers had been disinfected and the incubation period for Legionnaires’ disease had passed.
In all, there were 92 cases, 72 hospitalizations, and seven deaths.
While there have been no new cases since the end of the investigation. Several people remained hospitalized. On August 14, 2026, Dr. Allister Martin, the NYC Health Commissioner relayed grave news.
“I’m saddened to share that 2 more people have died in connection to the UES Legionnaires’ disease cluster. We mourn each loss, and our hearts are with their loved ones. These cases were diagnosed weeks ago, and the source has been eliminated.”
Martin praised the “aggressive remediation” for the containment and no new cases over the past three weeks, emphasizing that “people in the area are not at increased risk of exposure.”
He mentions that the investigation continues as samples from cooling towers and patients are analyzed and that one person remains hospitalized.
Legionnaires’ disease is a lung infection caused by Legionella bacteria. These bacteria are commonly found in natural water (lakes, rivers, and streams). If they make it into man-made water systems and given the opportunity to grow, they can make people very sick.
You become infected with Legionnaires’ disease by inhaling Legionella bacteria suspended in fine water droplets or mist. This can be from normal plumbing fixtures like sinks and showers. Especially hot tubs. Dead legs resulting in stagnation and hot water tanks are prime locations for these germs to take hold and grow.
The most common way people become sick is by cooling towers. An infected cooling tower can spread Legionella bacteria to people below and spread the germ to nearby cooling towers.
Legionnaires’ disease is a serious illness with a high mortality rate. Without prompt treatment it can lead to lung failure and death. The Centers for Disease Control and Prevention (CDC) estimates that around 1 in 10 people with Legionnaires’ disease will die from complications. If the infection is caught in a healthcare setting, the number rises to 1 in 4.
Why does this happen?
Part of why the illness is so deadly is the rapid progression of severe pneumonia. A person can go from feeling under the weather to unable to breathe and experiencing severe pneumonia quickly. Complications that require fast action and specific treatment.
Without prompt treatment, the sick person can die.
All this can take place because of the way infections impact human lungs.
Legionella bacteria prefer amoebae and ciliated protozoa are their preferred hosts. These one-celled microorganisms are found in their natural habitat. They seek refuge in these hosts to provide nutrients for replication and a shelter from adverse environmental conditions.
Humans are not amoebae. But part of them looks a lot like them.
Our lungs.
Human lungs contain what is called “alveolar macrophages.” While not an exact match, they look quite similar to those amoebae. Or at the very least, they are the next best thing. If the Hilton isn’t available, Best Western will do. Am I right?
During this infection process, these little germs have a surprise trick. According to researchers from the Institut Pasteur, the CNRS, and the University of Paris, Legionella can actually take over the cellular machinery of those cells. Ultimately turning off the immune response to protect themselves.
This is why it is not common for a person to recover on their own from Legionnaires’ disease without medical intervention. It is also why Legionnaires’ disease is so deadly.
Not everyone exposed to Legionnaires’ disease gets sick. Certain groups of people are at higher risk of severe illnesses. These people are more likely to become sick if exposed, and experience more severe illness if infected:
Those without these risk factors may still become sick, so it is important to test anyone developing symptoms of Legionnaires’ disease for this potentially deadly infection.
Legionnaires’ disease can only be diagnosed through specialized laboratory tests. Since it presents as typical pneumonia (even indistinguishable from pneumonia on x-rays), this illness is often underdiagnosed.
Common symptoms include:
Other Symptoms may include:
Most people begin feeling sick between two and 14 days after exposure. However, it can take longer for symptoms to appear in some cases.
If you or a family member has visited or stayed in the Carnegie Hill and Yorkville area and have been impacted by this NYC Legionnaires’ disease outbreak, The Lange Law Firm, PLLC can help!
Call (833) 330-3663 or send an email for a free, no-obligation consultation.
Don’t wait! Call today!
By: Heather Van Tassell (contributing writer, non-lawyer)