Cyclospora is a single cell parasite where humans are the only definitive host. From the CDC:
People become infected with Cyclospora by ingesting sporulated oocysts, which are the infective form of the parasite. This most commonly occurs when food or water contaminated with feces is consumed. An infected person sheds unsporulated (immature, non-infective) Cyclospora oocysts in the feces. The oocysts are thought to require at least 1–2 weeks in favorable environmental conditions to sporulate and become infective. Therefore, direct person-to-person transmission is unlikely, as is transmission via ingestion of newly contaminated food or water.
In the United States, foodborne outbreaks of cyclosporiasis have been linked to various types of imported fresh produce, such as raspberries, basil, snow peas, mesclun lettuce, and cilantro; no commercially frozen or canned produce has been implicated to date.So while many may blame the restaurant, that restaurant was unlikely to have had much impact on removing the parasite if already on the produce. And this is the challenge with Cyclospora. Last month, a panel was put together to investigate how this parasite can be controlled. While some preventive measures were discussed, no specific source was identified.
https://www.news4jax.com/news/local/jacksonville/attorneys-2-dozen-sick-after-food-poisoning-at-popular-restaurant
Attorneys: About 2 dozen sick after food poisoning at popular restaurant
Group claims to have contracted parasite from Cooper's Hawk Winery & Restaurant
By Vic Micolucci - I-TEAM reporter, anchor
Posted: 3:10 PM, July 09, 2019
Updated: 12:41 PM, July 10, 2019