# Parasitic outbreak of cyclosporiasis linked to lettuce

> **Open Intelligence Dossier** · First detected: 2026-07-13 22:07 UTC · Category: Health

## Executive Summary
A nationwide cyclosporiasis outbreak linked to lettuce has sickened thousands, with cases now spreading across 31 U.S. states.

## Intelligence Brief
A parasitic outbreak of cyclosporiasis linked to lettuce is currently spreading across the United States, having already sickened thousands of people. According to reports from The Independent, the outbreak has expanded to involve 31 states. While the parasite is associated with lettuce, the geographic reach is significant. In Nevada, health officials in Clark County and Washoe County have reported cases, including one Clark County resident who had traveled to other states. In California, officials in Merced County and Fresno County have confirmed cases, although CBS News reports that California cases have remained within the normal range for the time being. Major news outlets are focusing on the scale and the symptoms of the illness. The Detroit News and The Independent have highlighted the 'explosive diarrhea' associated with the parasite.


The Hill reports that the CDC originally warned that four states were linked to the outbreak but cautioned that more could be involved. Coverage from The New York Times provides guidance on the rising number of cases and references a previous instance where a cilantro-linked cyclospora outbreak sickened people in New York. Meanwhile, The Washington Post and WSB-TV are emphasizing preventative measures, specifically questioning if washing produce can help prevent the infection and urging residents to exercise extra care with fresh produce. This outbreak is significant due to the scale of the infection and the nature of the parasite. As noted by CNBC and The New York Times, the current rise in cases follows historical patterns of produce-linked contamination. The involvement of the CDC indicates a coordinated federal monitoring effort to track the spread. The mention of thousands of people being sickened suggests a widespread contamination event in the food supply chain, specifically tied to lettuce distribution.


Local doctors, as reported by ktnv.com, are now urging residents to stay alert as the illness continues to move nationwide. Future developments will likely center on the identification of the specific lettuce source and the expansion of the case map. The Detroit News is already tracking these cases on a map to visualize the spread. Public health officials in regions like Southern Nevada and California's Central Valley continue to monitor for new infections. Experts and health agencies are expected to provide further recommendations on produce safety as the CDC continues to investigate how many states are involved and whether other produce items beyond lettuce are contributing to the current parasite surge.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| ktnv.com | Local doctor urges residents to stay alert as cyclosporiasis spreads nationwide | [Source Link](https://news.google.com/rss/articles/CBMiqAFBVV95cUxOWWJSWVlaaHVKeUdTLWppYk9TQnUwN1d4MHlaNkFycFdsRVFDbVVWNGI0d3dIS0loOVN0VkxYbkNSQ1E0NU14V2dfaWNBZVh3MzVfUmZxT294WTgyZlh6MjZKR0ZrX1l0Z0NKT1JJTjN1WWtscjR1QTQ4TnFLYkdvWnI4RUNBdjJfWkQtS21sYXRWU2tPRDluZU9lRXJQLTB0QkdzRkZiVEw?oc=5) |
| FOX5 Vegas | Southern Nevada health officials report first cyclosporiasis case linked to outbreak in Clark County | [Source Link](https://news.google.com/rss/articles/CBMiwwFBVV95cUxOU2Z3a0t4YklqWkhRVXdXOHVTVkYtd3hHWnJLbHRSMGlIMzF2bUp3Wk5hakRjbG5GRkNVV2JYdzQyVVlKTVJvbWtxVmpqV3ZGMmJPeWdhakl0U1FHRktTLWFuaXlsTmZHdGNVNFlqMVpsVzI4QUY3WnFRT3ZtNzRITHdRckdjclRDcHJPMDZjUDU0NGZTYlNQZ0FDd2QxYkV2bnBueHV6c2U5TUR1N0o1MDhCU2hjZjlrNFMtNE1SS1lmQzDSAdcBQVVfeXFMUGxnVVBrYk9VYUtoaDBXRUFaWUoyeVhaXzdzUDNZbk5XUkwxaUx6dks3UndDX1lmdFUyYnNrb3B6SFFiMjEzYlRUUzlvRnN5SEVHZ0J3YnRuSmxSc2oxWjNkRU5ldkdtck1hZWNYMnVBbktiT2l1MnVoNDVWQ0pCYzBydnJOaHc1TjNOYS12eGx) |
| KOLO | 8 News Now | Washoe County reports first cyclosporiasis case of 2026 | [Source Link](https://news.google.com/rss/articles/CBMikAFBVV95cUxQbjZqcC1YU0xhWmdSZkYtM1BhNWxrNDFuLTN1SGNaUWtJUnBzb2xVa3hkSlE4S0IweXJaejgwTTZHMS1IYmNIcEowcXNUS0lHOTJueEFZM0dzUkFtLWJacVliZUFHRjdpT2VCWjZhUF80OVpYYWlQLUZwc2UwZUxxakthY3E0RnlhUUtjaVdQWDk?oc=5) |
| KSNV | Cyclosporiasis reported in Clark County resident who traveled to other states | [Source Link](https://news.google.com/rss/articles/CBMi6gFBVV95cUxQdGhEUlVGSzNtX1hHeHJxVGxJRjRQUnlRLVNhYlJRM3lPYjVtTDh3RF9yNktlWERPbjFIeklOOTRoZHp5UjNRZWZ5SzdXSUtMODVMTU1BRmNEWGp3cUIxaklwX25Za0l6eTNXQmo2UlFlS2lFZ2s2RGtTZTVkYy0tM0R6QkdKYnZCRlkyampmc1hHWWJCY2FIQXFwY3hzOEdJcU9haUR0VThhZmFZM29WX1B5MUJ1RTZYVnh4MVY3QWpMT3ZZMndDRXNLYTRTZkhTb0x1dGFZNjZyYnRDMFhzS0lJNENMUzhWa2c?oc=5) |
| KLAS 8 News Now | Clark County reports cyclosporiasis case linked to nationwide outbreak | [Source Link](https://news.google.com/rss/articles/CBMiwgFBVV95cUxNYnlfWmhQZ19MV0pMbnBzUUU4aTNObWN4TzJMa0g2Tmw4bmFVWFNsVWs1bW1xVjI1eVFuUjhLa1puMjRMeGZUdlVoR3RVTEZvOUJTdnVyNjl6b3B4QTItUHZ5Qk9vUmt0SFVubTQxdExDc2JsR0xDajUxOG13QXFTdk1oOFNvRHFuVXJaTkxYOGZzYks0WVRRWjdnREJxRFp4b3dHc3I4blNyeTVvRTJhLTg5NDlJSUV5Zll0ekN3V2UxUdIBxwFBVV95cUxPNHkzZnZVS0Y0VFlxWDlmQUZwY3k4Qk83VHk2aFZaT3U2NlcwWm8yYW8zbVdjQ2k3cEhYLVZhZkxFUkZ0YnhjTzhEXzc5VElqMUE3OThHX2ZScGJudV9nY090ZS1WTm9vbXl4cEZYUWpvLVRxNDFEazN6eExqY1Q2em5VdnZ6eHhlVlJUalJYODV) |
| The New York Times | Before Lettuce Felled Thousands, a Cilantro-Linked Cyclospora Outbreak Sickened New Yorkers | [Source Link](https://news.google.com/rss/articles/CBMijAFBVV95cUxNQzRIUjFja253bXoxZ2hrcXlmbkpPbWlRdldVbUt2ekwzdjBPZHV3b1hIY1dHWWhMODZidUNRc3V1d1Bua3pDZ0tYOXdkbFg2S1NFRzkySmNzWVlYNHhTc1JIdGlCVU1pTm1nSWlmQkZwbm5YRjlLR0VsdEZ4ZTJVRzlWajJTSTVaWUxidA?oc=5) |
| yourcentralvalley.com | Merced County confirms 1 cyclosporiasis case this year | [Source Link](https://news.google.com/rss/articles/CBMijAFBVV95cUxQUHBfMU5LNzZTZHZtcnZCeElYSUthYWtQVmFVMXQ2NlNFWE5WUWUyQmhkeWZsNm1WRnp5VkF3aF9pSUJjRDdmajhrazl4Mmc3SE8teU5vQlR1aFVoaUNEcjBwMmc4UlhfRkY1S1BxSGp4OUhnZU9ibU5pN2FuNDdsZm5STFdHaGlMckNpTNIBkgFBVV95cUxPWWQyZXQxbENFWVJmMnpTN1VUVXhKNmRoNTVvS1lwQ2hGc0QtNWE0NEw4RDVSV2ZwaVoxNE5NSG9iakNNdHBHSjdIRWZYcV9NVGNJN0dtdVR3ZzVVZ3VlU05NTXkzSzlhdWVHSFpiblRCaFJkQ2Z2c1BtMWIxUkpkV3FpWVV0XzVSalFDaUVGTTJ1Zw?oc=5) |
| ABC30 Fresno | Cyclosporiasis case in Merced County confirmed by health officials | [Source Link](https://news.google.com/rss/articles/CBMimAFBVV95cUxORVdYcUp1SC1NUkpHQkY2dW5XX3ZaLXVzS2R1S2k4LW9TODRkVU45Q0Fsenh6WFZUaWI3ak9reEJPeTM4UVZGZnpSVUF4WVdmSDk0U0l6a1B0M1AtX3B0Nk4xb0NVTUFGcU1fQWx5emtBYzBCek9xVUJFV3o3R0drZ0FaMGZVNmRWLTZnb3M2OGQ1WDVEeHkwVNIBngFBVV95cUxNOUI4a2o2bmczVHZmZTRNUUpBb0Nka1NpYUtYM1dxX3FMVlFqSk1ZQ2F0NHkyY0dqX3hVb0ZINjl2Mi1wNVlMSVJ2dUlzNXFVeUJzOU1RWU1YUUhtckhOQmhOZmRscktBTFh5SU1neXF2NVVSN0FLbEtQc3hYQ19YaklycnZXcmh3dkJ4MDhCdmwxdENxQ0o0a0stRjdXQQ?oc=5) |
| kmph.com | Fresno County confirms rare cyclosporiasis case as health officials monitor illness linked | [Source Link](https://news.google.com/rss/articles/CBMiugFBVV95cUxOZU1xbGc4cHNsNElwVXM5TlJTX0ZaUEIxMmo4VWJfUEtBRnFtR3NxV0gxWE1QdVhRVGZHVHNsczJRUGFPUDJnY05xdVRQa0cyWVgxUURBbmV1Skt5ZlZuOWZrdEkwYlhMWWlQTzNlUjBQU0d1X2ZRdE9hV0ZTSEpiZEJRLTlLLXlCbEVzWEJWeDVSVjAxT1d1NUpvcGpQb3FqbG1kREY1NFM4V2xiMXlWLVRJOHlaT2x1dVE?oc=5) |
| yourcentralvalley.com | Fresno County confirms a cyclosporiasis case, health officials say | [Source Link](https://news.google.com/rss/articles/CBMikwFBVV95cUxNNXhqOVBOdVIydVhNLVAzVjdVWEo5ZEhMQl9lTzBxS0tSTDd4NWl5Y2g1SjJvclQ2Zm9kTEc1LV9hVzU3SHkxNkt4X3VGZGJhRUc4eDFqY2V4czYzMm84eXpkakJGWnN6NHIwMUR2MHlIcEJuMHlPUm1HM25tTUhqLVdHalE0Y0hFdVBVRHhBb1VtQ1XSAZgBQVVfeXFMUGdRMmVicGc5SWllTWhma0Yyd3RGNnc3dEYzbnNMT29CSkVDZzU1RXY3VlhGMVFxT3AzQ05xajRnbXg5bFlvUDRybGVXSUpLVF9saUJfbGhfenBwMzh2eC1pMDV1Z29icEdmdDNoNkZ5aUVLTlRYX1RORU1lZEJGZG9iX1pyVWZQUENaSEozN3hCTjd2ZTBOZUQ?oc=5) |
| Axios | California dodges gut bug (for now) | [Source Link](https://news.google.com/rss/articles/CBMimAFBVV95cUxOMWktNk0zV1plaVF6RERKV1l6X1ZPd3pYV090ZEs3elgyVHJLdzJxTEFWSm1DM2FUZUQxb2hfZ0hXR1ZXcGxMa2RvUnVzYmVCT1NLVmZuSHZaQ201dktpRjBPZERRTl9tODdvYkI4Ny1LX1dLUlZudE1PZ2xHSTAxQjI4RHd5Rnd0TWY3N2NnRHNod2N5YjhOVw?oc=5) |
| The New York Times | Cyclospora Cases Are Rising. Here’s What to Know. | [Source Link](https://news.google.com/rss/articles/CBMijAFBVV95cUxOZ2xLb0Z4NGx2X0V2TUdYNmthN2kyaWxnUW5yLWFFRHJZSDhIckJoNWxrc0pnSWtFcE9LVFpkQjlWMVAtR0lZeVVoV3k5YjhwWUF6Wmk3Xzc5WGNmVnpGOTJ3Z3FXaEoybjhBZWVYaDJGN2pXbUIwYS1WajRnYXV6MDZzbm9UZDZfcjlaVg?oc=5) |
| The Hill | Four states linked to cyclosporiasis outbreak, CDC warns more could be involved | [Source Link](https://news.google.com/rss/articles/CBMiwwFBVV95cUxPQXJyeXNrMjdRbC1hcDdoTlNHM0YzbnVDT2h0cS1WMVduaUxjNG11MG5KeUpnUWVKY3EzZ25KVEdhalVRd1ItcWhLdkVPczVZcXNPZWJVUmlRQVBmNXJJS2RxejUwREF0N2FYMVdGb29pWWpreTMxNzJYQ216ODROUUZ1LVREWEFsV1EtOTI2bXoxTWlQMDVYUXNTTVlBVmVhVEdHX3NsNGgzT3ZYdXJmclBtLTR6SDlRc0R2NmctQURxdknSAcgBQVVfeXFMTnlZX0p6SXJKT0U0RVM5UVJqRm5kb0M4VjR0YW12TlJQTy1Sekozb051eUhNTVRDS2U2MTdaaE8wNmZDSHZYUXVpREJJOE9nM3VxNFhUZ1BPUF8xalQwOHhadkpEX2xieTJsNlBmZFh2aVBRYndTdGNnaXZCay1GVVd6YzRscVRIdGFxb2JnZXl) |
| The Washington Post | Can washing produce help prevent cyclosporiasis? What experts recommend. | [Source Link](https://news.google.com/rss/articles/CBMivwFBVV95cUxPSnRPdXBXVjNsTFpzUF9RWFFfRzZ0dF9FTkM5dFNGZXZLTUxYOThZVnlyX25taGl2WmhyR3FJVV9palZnMUZ3WkNJRTdhRE9MZjdHREhDaV9tMldKSW9tNEtpYjJYMG9TeFllTXNON0JiUXlLZDFaVE9NSkMwcFAwVFY3ZU0tLWVTcWVfVml3NXRUUEpEM05kcnY1UUhrQUpDV0dmcTdFUjR4S0kyS1duMzVyRUVqX3N2aEVaNzdPTQ?oc=5) |
| WSB-TV | Health officials urge extra care with fresh produce as Cyclospora illnesses rise nationwide | [Source Link](https://news.google.com/rss/articles/CBMi4wFBVV95cUxORGZqY09kRUtwYmVTU3FkblBMX2tVVHVUUlgyNUFWSGYzUzVjM3hnNmdGN3BuTDFZNThnblpNZXp3ZmUyTm1XeDhvNGxsOGQ2VW9ONXJNdWRka0ZkazBGWUdGR19WbW9ZT016NWlCY09qSi1tUTFNYWJiRlJNdFBYQV9aUHpobzB1S01lbEJvSVRoYllIcE9OUk84OHNSUDhCbUppcWJTTUNSTDV6LXk2OXl1MGFVQmtlUzZRM0hIeVFHM0JXM2h0Z2x6VW5remlVYkxzcElmbExnVHRTajJpcUdwSdIB9wFBVV95cUxQaHhVak80bEpEQVYwTnBtWGlGUXBDSVZnQVYwc1otR2VMV1YzLTNUVlFSMnBlTWs4NFVoekU4UlFEMURWZTREeTByUzBnNVJMUXZMTEtocWZkTFJLbHhubUJqcndYcFJPYl9KZU5xQTJ) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-07-13/parasitic-outbreak-of-cyclosporiasis-linked-to-lettuce*