New York Sees Rise in Parasitic Illness Causing Severe Diarrhea
New York is experiencing an increase in cases of a parasite that causes "explosive diarrhea".

New York, NY, August 14, 2026 —
New York State is reporting an increase in cases of a parasitic infection known to cause severe diarrhea. The parasite, identified as Cryptosporidium, is a microscopic organism that can lead to a gastrointestinal illness characterized by watery, explosive diarrhea.
Health officials are monitoring the situation closely as the number of reported cases rises across the state. While the exact reasons for the current increase are still under investigation, health departments are reminding the public about preventative measures to curb the spread of the parasite.
Cryptosporidium is typically transmitted through contaminated water, including drinking water, recreational water like swimming pools and lakes, and untreated water sources. It can also spread through contaminated food or direct contact with an infected person or animal.
Symptoms of cryptosporidiosis, the illness caused by Cryptosporidium, usually appear within a week of infection and can include:
- Watery diarrhea
- Stomach cramps or pain
- Dehydration
- Nausea
- Vomiting
- Fever
- Weight loss
The duration of symptoms can vary, often lasting one to two weeks, but can sometimes persist for longer periods, particularly in individuals with weakened immune systems.
To prevent infection, public health recommendations include practicing good hygiene, such as thorough handwashing with soap and water, especially after using the toilet, changing diapers, and before preparing or eating food. It is also advised to avoid swallowing water when swimming in lakes, ponds, rivers, and other recreational water venues.
Individuals experiencing symptoms are encouraged to consult with a healthcare provider. Testing can confirm the presence of the parasite, and while there is no specific cure for cryptosporidiosis, treatment often focuses on managing symptoms and preventing dehydration.
Further details regarding the scope of the increase in cases, specific geographic areas affected, and any identified sources of contamination were not immediately available.
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