The Centers for Disease Control and Prevention said Aug. 24 that confirmed cyclosporiasis infections had climbed to 17,180 across 48 states and Washington, DC, up 1,464 from its last update. New Mexico was added to the list, pushing the outbreak to nearly the entire country as hospitalizations reached 922 and deaths held at two.
That is why the count is drawing attention now. Cyclosporiasis is caused by Cyclospora cayetanensis, a parasite that can bring diarrhea, nausea and vomiting, with watery illness that can be frequent and sometimes explosive. The CDC said the number matters even more because it is still catching up: its confirmed tally trails state-by-state reporting by about six weeks, which means the federal total is not the full picture of what people are living through today.
Michigan and Ohio remained the hardest-hit states, and Michigan alone reported 14,277 total cases as of Aug. 20, after 13,909 on Aug. 11. That jump in just nine days shows how fast a state total can move before Washington, DC, locks the cases into its own slower federal count. The Michigan health department updates its numbers each Thursday, part of the reason the gap between state and federal reporting stays open.
The CDC said laboratories had not yet confirmed at least 11,841 additional cases, a reminder that the outbreak is larger than the official federal total. It also said 94 hospitalizations were reported since the previous week, even as the broader trend was said to be moving downward. That combination is the sharp edge of this outbreak: confirmed infections are still rising, but the pace is easing while the backlog of suspected cases waits to be sorted.
The FDA is tracking at least six other cyclospora clusters that have not yet been linked back to a source, and the shared food or food sources driving the outbreaks remain unresolved. Only Delaware and Hawaii still do not have federally confirmed cases. For now, the Aug. 24 update tells a clear story: the outbreak has spread across almost all of the country, but the answer to what is feeding it has not come into focus.
The CDC’s reporting window begins on May 1 and covers lab-confirmed cases in people who did not travel internationally within 14 days of illness onset, so the federal total is built for verification, not speed. That makes the final unanswered question even more important: whether the next round of confirmations will keep widening the outbreak map, or finally point back to the source.
