CDC Investigates Mysterious Cyclospora Outbreak as Dangerous Parasite Sickens Americans Across 17 States

CDC Investigates Mysterious Cyclospora Outbreak as Dangerous Parasite Sickens Americans Across 17 States

Health officials in the United States are investigating a growing outbreak of Cyclospora, a microscopic parasite that has already infected dozens of people and is causing weeks—sometimes even months—of severe digestive illness.

According to the U.S. Centers for Disease Control and Prevention (CDC), at least 145 locally acquired cases have been confirmed across 17 states, with the number expected to rise as summer progresses.

What Is Cyclospora?

Cyclospora is a tiny parasite that infects the intestines and causes an illness known as cyclosporiasis. The infection is commonly linked to contaminated fresh produce or water and often becomes more common during the warmer months.

Unlike many stomach bugs that disappear within a few days, Cyclospora infections can persist for weeks or even months if they are not properly treated.

Symptoms of Cyclospora Infection

People infected with Cyclospora may experience a range of symptoms, including:

- Prolonged watery diarrhea

- Severe abdominal cramps

- Bloating

- Nausea and vomiting

- Loss of appetite

- Extreme fatigue

- Unexplained weight loss

Symptoms usually begin about a week after consuming contaminated food or water and can return repeatedly if left untreated.

CDC Investigating the Source

The CDC is actively working to identify the source of the outbreak. Investigators are tracing food histories and examining possible links between reported cases to determine how the parasite is spreading.

At this stage, officials have not identified a single source responsible for the infections. Similar outbreaks in previous years have been associated with contaminated fresh fruits, vegetables and herbs.

How Cyclospora Spreads

Cyclospora is primarily spread through food or water contaminated with the parasite. Unlike many viral stomach infections, it is not commonly transmitted directly from one person to another because the parasite requires time outside the human body before becoming infectious.

Health experts recommend thoroughly washing fresh produce, practicing proper food hygiene and drinking safe water to reduce the risk of infection.

When to Seek Medical Care

Anyone experiencing persistent diarrhea lasting more than a few days—especially when accompanied by severe stomach pain, dehydration or unexplained weight loss—should seek medical attention promptly.

Cyclospora infections can usually be treated effectively with prescription antibiotics, making early diagnosis important for a faster recovery.

Public Health Alert

As summer travel, outdoor dining and fresh produce consumption increase, health authorities are urging Americans to remain vigilant. The CDC continues to monitor the outbreak and will provide updates as investigators work to determine the exact source of the infections.

Anyone who develops prolonged gastrointestinal symptoms is encouraged to contact a healthcare provider for evaluation and treatment.This version is optimized for Google Search, Google Discover, and reader engagement with a keyword-rich headline, clear subheadings, improved readability, and strong SEO structure.