Coverage dated July 1, 2026 to July 4, 2026

CDC investigating severe intestinal parasite outbreak in 17 states

Headline from Deseret News

Newest development Jul 3, 2026 · 2 reportsCDC tracks Cyclospora, infection causes 'explosive diarrhea'

The Centers for Disease Control and Prevention is investigating the source of a cyclosporiasis outbreak it said sickened at least 145 people in 17 states. The illness is an aggressive intestinal condition that is caused by a parasite.

Deseret News's own description from its feed. We collect headlines and these descriptions, not full articles; read the original reporting below.

Earlier updates in this story

Developments in this update

2 dated developments, oldest first, newest marked. Each is named by one outlet's own headline; open its reports to see every outlet that covered it.

  1. What to know about the diarrhea parasite outbreak

    Headline from Pix11 ·

  2. Newest

    CDC tracks Cyclospora, infection causes 'explosive diarrhea'

    Headline from Arklatex Home Page ·

4 reports not tied to one development ·

Read the reports

Reports & sources

8 articles, oldest first.

  1. Gizmodo

    Oh Great, a Parasite That Causes Explosive Diarrhea Is Spreading Right Now (opens Gizmodo)

    Published

    Gizmodo's feed description

    Clusters of cyclosporiasis have been reported in multiple states, and several people have been hospitalized.

  2. Deseret News

    CDC investigating severe intestinal parasite outbreak in 17 states (opens Deseret News)

    Published

    Deseret News's feed description

    The Centers for Disease Control and Prevention is investigating the source of a cyclosporiasis outbreak it said sickened at least 145 people in 17 states. The illness is an aggressive intestinal condition that is caused by a parasite.

  3. Pix11

    What to know about the diarrhea parasite outbreak (opens Pix11)

    Published

    Pix11's feed description

    NEW YORK (PIX11) — There is a diarrhea-related parasite slowly spreading throughout the U.S. right now. What is it? The most recent surveillance of Cyclosporiasis by the Centers for Disease Control and Prevention (CDC) revealed that 145 cases have been acquired domestically and another 45 people wer…

  4. Fox News

    Mystery parasite leaves Americans battling ‘explosive diarrhea’ as CDC investigates (opens Fox News)

    Published

    Fox News's feed description

    The CDC reports 145 confirmed cyclosporiasis cases across 17 states as the parasitic outbreak season climbs, with 20 patients hospitalized so far.

  5. Legal Insurrection

    Explosive Diarrhea Parasite Spreads Across America Ahead of Independence Day (opens Legal Insurrection)

    Published

    Legal Insurrection's feed description

    CDC urgently seeking source of parasitic Cyclospora outbreak that has spread to hundreds in Michigan and 20 other states. The post Explosive Diarrhea Parasite Spreads Across America Ahead of Independence Day first appeared on Le·gal In·sur·rec·tion .

  6. Arklatex Home Page

    CDC tracks Cyclospora, infection causes 'explosive diarrhea' (opens Arklatex Home Page)

    Published

    Arklatex Home Page's feed description

    The CDC is monitoring over a dozen states after more than 100 cases of Cyclosporiasis, an intestinal infection caused by the parasite Cyclospora cayetanensis, have been reported, with symptoms including frequent, often explosive, watery diarrhea, stomach cramps, bloating, and fatigue.

  7. The Guardian

    CDC investigates parasite that’s caused cases of ‘explosive’ diarrhea in 18 US states (opens The Guardian)

    Published

    The Guardian's feed description

    Parasite cyclospora spreads through produce and water contaminated with feces and causes the intestinal illness cyclosporiasis The US Centers for Disease Prevention has been working to find the source of a parasitic illness that causes “explosive”, watery diarrhea, with more than 400 cases of the si…

  8. Newsweek

    'Explosive' Diarrhea Parasite Infections Soar in Michigan (opens Newsweek)

    Published

    Newsweek's feed description

    Michigan health authorities have reported 300 cases as the state battles a “large and growing outbreak" of cyclosporiasis.