Storyline
Cyclosporiasis outbreak spreads across US states
A cyclosporiasis outbreak is rapidly spreading across the United States, with at least 34 states reporting cases and over 1,600 confirmed cases plus 5,100 under investigation. Health officials and the CDC are investigating the source of the outbreak, which remains undetermined.
This is a long-running storyline that has developed over 35 days. The homepage highlights its most recent activity, so the outlet count there reflects the latest wave. The totals above cover the full run.
CDCIllinoisMichiganCaliforniaUnited States
2026-08-05
- Cyclosporiasis cases grow to over 800 in North Carolina: NCDHHS
- Over 850 cases of cyclosporiasis confirmed for North Carolina: What to know
- Cases of potentially deadly fungus detected in 23 states, CDC data shows. What to know
- Cases of potentially deadly fungus detected in 23 states, CDC data shows. What to know
- Over 20K cyclosporiasis cases suspected in U.S. as outbreak reportedly linked to 6 more states
- Cyclosporiasis cases rise to 125 in Louisiana
- CDC reportedly expands US cyclosporiasis outbreak to 15 states
- CDC reportedly expands US cyclosporiasis outbreak to 15 states
2026-08-04
- What to know about cyclosporiasis' lethality after Michigan reports 2 deaths
- NC reports 149 new cyclosporiasis cases
- CDC adds 4 states to Cyclosporiasis outbreak
- Why cyclospora can be deadly for some people
- US reports first two deaths linked to parasitic infection outbreak
- Two deaths recorded as US battles Cyclosporiasis outbreak
- Pasadena Public Health Department Affirms Cyclospora Spread Across U.S. Not Evident Locally
- Nurses Chase Cyclospora, Aided by Interviews, Fast-Food Receipts — And the Messy Details
- Two people in Michigan have died from cyclosporiasis
- News Wrap: Michigan reports deaths related to cyclosporiasis
- Michigan reports 2 deaths in cyclosporiasis outbreak
- Michigan reports the first 2 US deaths related to a diarrhea-causing parasite
- Michigan reports 2 cyclosporiasis deaths as cases top 18,000 nationwide
2026-08-03
- Michigan reports first 2 US deaths related to diarrhea-causing parasite
- Cyclospora outbreak is linked to two deaths in Michigan as case counts continue to rise
- Michigan reports the first 2 US deaths related to a diarrhoea-causing parasite
- Michigan reports 1st 2 U.S. deaths related to diarrhea-causing parasite
- Michigan reports the first 2 US deaths related to a diarrhea-causing parasite
- 2 deaths reported in cyclosporiasis outbreak in Michigan as cases surpass 11,000
- 2 deaths reported in cyclosporiasis outbreak in Michigan as cases surpass 11,000
- 2 deaths reported in cyclosporiasis outbreak in Michigan as cases surpass 11,000
- 2 deaths reported in cyclosporiasis outbreak in Michigan as cases surpass 11,000
- Michigan reports first 2 US deaths in outbreak of cyclospora
- Michigan reports first two U.S. deaths in outbreak of cyclospora
- Two people have died amid US cyclosporiasis outbreak, Michigan officials say
- 1st deaths in cyclosporiasis outbreak reported in Michigan as cases surpass 11,000
- Michigan reports first 2 US deaths in outbreak of cyclospora
- Michigan reports first 2 US deaths of people who had been sickened in outbreak of cyclospora
- Cyclospora outbreak tied to two deaths as parasite-borne illness continues to rage
- Cyclosporiasis cases surge while new research questions ‘protein maxxing’
2026-08-01
2026-07-30
2026-07-29
- Cyclospora outbreak in Michigan showing signs it could be slowing down
- More than 18,000 cyclosporiasis cases reported across 45 states: CDC
- More than 18,000 cyclosporiasis cases reported across 45 states: CDC
- More than 18,000 cyclosporiasis cases reported across 45 states: CDC
- More than 18,000 cyclosporiasis cases reported across 45 states: CDC
- Over 18,200 cyclosporiasis cases now suspected in US: Where it's getting worse