# CDC searches for source of parasite linked to ‘explosive’ diarrhea

> **Open Intelligence Dossier** · First detected: 2026-07-01 10:07 UTC · Category: Health

## Executive Summary
CDC races to pinpoint source of Cyclospora outbreak sparking explosive diarrhea across 17 states

## Intelligence Brief
A parasitic infection identified as Cyclospora is causing an outbreak of explosive diarrhea in the United States. CDC reports 145 confirmed cases across 17 states, with additional reports of 140 Americans ill in more than a dozen states.


Coverage highlights the agency’s active search for the contamination source. Local outlets in Illinois, Michigan, Ohio, Colorado, Louisiana, Florida and Georgia, among others, have reported the surge, with stations such as FOX 32 Chicago, WAFB, News4JAX, WGN-TV and CBS News noting the rapid spread and state health departments launching investigations.


Future updates will focus on CDC’s findings about the infection’s origin and any public health advisories issued by state health agencies. Monitoring will continue in the identified states as officials track new cases and seek to contain the outbreak.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| People.com | Foodborne Parasitic Outbreak That Causes 'Explosive' Diarrhea Has Spread to 17 States | [Source Link](https://news.google.com/rss/articles/CBMipgFBVV95cUxPOFdzbXpDejByblg3TFNYMkotSUJEaXZ1dk1Yb0JWSlN0ZGEzckV2TlNMamZfUDNnTHVWQnhhdDZMdmc0UXNxZ3FQQWMzbWU0UWhLVmdoR2lQMUpCMlBZYU0yOGZKWnpySmVjall0TS1jTS1LV0ZYSmJOTlI2M0ROMjEyREt4bGkzTmdtN21leHZwcjBnMHNnMnNCR2NUSDEyckdYMVl3?oc=5) |
| FOX 32 Chicago | 'Explosive' diarrhea parasite hits Illinois as CDC searches for source | [Source Link](https://news.google.com/rss/articles/CBMidEFVX3lxTFBUNGcwZ05EV1dXZ0JtYXBVeHVWSFdFUnc5NWN6VW9RTmUxbFpYckhCLUZIeW9UaDhIZGh6ckRxREdJbTF1UFJkak5iSEhYSUstRlZCLTNQQVdlYlh6Z042YWpmcG1vcUdUQm9ETW1VS3dEaU8t0gF6QVVfeXFMTXh5QVp6ZTR3Y01oMEI1d1JKTnFTci1QQm5NN1JVVHY3VnpCU1pmeDZkZXFwVnJkZkZOb3VuU0JFOEoxMS1BZ05jUkdiak1Xb1A5SDFhb1NMazN1NXNvSVRwa1lLb0dSVFZ5a2oxUTlxbWdpX2tpdFRwd0E?oc=5) |
| WAFB | ‘Explosive’ diarrhea illness reported in 17 states; Louisiana included | [Source Link](https://news.google.com/rss/articles/CBMingFBVV95cUxNUkg2QnJNcUxzaEVTWmRNS04xVzRwTzJPRDdUTEJubnJRdUpmMjlMOGZoTk54SFkyVGFUSG14aUlwWWFJTUlKTk9NTlVFU1I1TlRPVWk5TnpjX0lzNWRvUGY4SVpqTld4bnRiNlF2ZTg3OERJcjVJT0FHRkdNZU5oMGpmdkN1enZNWTVqSFhWdGJMQ0R1QThPbVZvbUVUUQ?oc=5) |
| News4JAX | CDC tracks 145 cases of intestinal illness caused by tiny parasite across 17 states, including Florida and Georgia | [Source Link](https://news.google.com/rss/articles/CBMi8wFBVV95cUxNSldFNW5IYkpsWUhrY1ltVi1vbWxEeFI5VXZ0d2VCZGRmWFQ3UjZXNjg0XzRPT1RfMVlyOEh5a0p6Mk1kSjc5eElnSjBFdHhhVEhueGtqMF92aGVLbW50blRGaGkyb1hkSDBORmRzNkMxTFE2Tm43ZWFSWFQzVGxnZnpxNk1PaDFYTFo1eU9iNnd3a01FWlNTa042Rzk5MTN6WFVHSVlfNFl5dUZLU0lyRW1Rb0pMamZDWXBvOVkxSzNZS3VGbjhNMm0xMjhVa0lwU1l0QVhzTWpGNm83dWtKaTE3ZVpNbzVVdV9GRmV6YmdsLXc?oc=5) |
| WGN-TV | CDC seeks source of parasitic outbreak linked to ‘explosive’ diarrhea in multiple states, including Illinois | [Source Link](https://news.google.com/rss/articles/CBMi2wFBVV95cUxNSWR0OGszejRiUXhXbFctVVRzODFKeHdDcnhOcWhlOS1LUUxjRHVlTDB0bUtlNElLSEFyYnoxRGNEQ2c5aG4zR0p5Mlp1U2s3bVRwdU5PRHphTXgxdDlxaGtTR1RkRjhLSUplNmU1ZU13VFVFUFRVWkVFRVdNbE5uM3RYNjNKdkRLU0p4eDBaVTgyZGE2bTlpLUE5N3NpREJ2WHF2MUFNdzloZ3NpQlJPSEV6a2JHakVnM2pETC1NeDZfZWdUME9MUzhxZkRRS01xZHdMUWxUdHZNdW_SAeABQVVfeXFMTmhZVExNUHhid0pQNkg5WVp4WUEwa3ZPZnJ2U2RtMGF6dl81ZlFERTQzZGx0cEg4MnA1aGpfa1lIalRxQTlqMmxTVEdXbS1WSGgzRVo5aVRtTDhBQldTeGRMa1lXS29OeDVHcDZlNWt4Qkk5eXdXQ2l) |
| ClickOnDetroit | WDIV Local 4 | Michigan health officials warn of ‘large and growing outbreak’ of cyclosporiasis | [Source Link](https://news.google.com/rss/articles/CBMizAFBVV95cUxOWnc5SHJxS25JemN0bGhmVkhEV0NrMkVadDloXzRISmhSNVFuaDZ4ZVIyQ2w3X0Y4X1NwdVg0NlRSU0lrS2lRRTR1MGxSNjlZeWFkVm1ScmZZazB2UC1UZ2Vyc00wLXdkdDdwR09kVXdzZWstUEJTMGg0bmFtZFJha0ZDbktIVmpia215cVJrbUdDLWNIaFgtT0FWaXBnQmxhOHhoM21Rbm02Y0NBdkppaEpNbGFxUzNVLWVsOUl1amx6MUMwNmJBeV9LTE0?oc=5) |
| FOX Weather | 140 Americans in over a dozen states sickened by nasty diarrhea-causing parasite as CDC investigates | [Source Link](https://news.google.com/rss/articles/CBMipwFBVV95cUxQOHF5Tk4zMDJjYlcyOFJvbzdDVmRDdXpfa0Q4SFhBRXdEYnB6YmlSUG5WdFNXdDR3T1lHWGpuTlp5Q3BZMEh0OHVaQXhiTkhGWkFBeXkzSFNTaHlTbnNhU1RfYTFuQXZFTEZCUm9hQU5WRk9WZE42MEpkU3BrblppZmd0SzBzWFpxOWx2dklYSF9pSElsN3JfZ3BtbEtWZjFQZGxNbmh4a9IBrAFBVV95cUxNMWtVUUhzMEV5Wkg0OVBkbmM3aEdkZVBoRWZEYmV4bDhPWjNGWlhXaUxWaUhyQUcxZFNDME9zMGtNb0VRem15VHpNa0NMQ1QyNlQ1em9QMm1pYW1hbHptNFdna0hrZm9ueEJVMHVxWlI5OGd5OXpTU0ZJeW5lWUVOdnF3X1MyM3MzOUNsR3lKcjBNemMwNlRscEMwYXhQbzd5R1FuTV9ISTRiT1R) |
| CBS News | Cyclospora illness counts spike in Southeast Michigan, health officials investigating cause | [Source Link](https://news.google.com/rss/articles/CBMikgFBVV95cUxPYTJ2Q0tobnVvSzRvY2tYYldkaTRqdVhiSUoxNXNWeVY1Zm9xWUl1WS0xSXhZLWV3RzdnVXBvQjJ1RHFHZk1kNzZ2enRnTDg0Q3NnUWhTWU91THg5ekNtYmU4SWkzU2pmejdFdV9XVEYwV0tZS2hIY3VYeVd2Z01lbnBJcWJlMG5aN2Yya2JkVUdnQQ?oc=5) |
| The Detroit News | Michigan tracking 'sudden and large' spike in illness caused by parasite | [Source Link](https://news.google.com/rss/articles/CBMipwFBVV95cUxNRjhVM3FkZTJDMmtCdFllYjN2MVZkcWdZNmlNdGMyQTc2cXpwZFd2YmJ4TzlpRldiR0syQVJoWlhBc3JtQ1htX2Y3akE3WW5KWWtRM1dpT2I1MG9JcV8xYWdGeGlOT2tuZjQ3T0k1RzhlLWNONHNidnpCWlBVc21IMldVWFlCenlxMkhkcHlfa0QyV0RVc0l2X09KNmZOTzR0OXlrV1pORQ?oc=5) |
| Detroit Free Press | Tps to prevent cyclospora infection and explosive diarrhea | [Source Link](https://news.google.com/rss/articles/CBMi0gFBVV95cUxQUWljbWF3QkozcEl0V2hYTEtaa2U5X0ZwdTZwOUVYX1ZNTFp1ejFWZEU3QXVFWHZxNHNQRHRHU2hOUE41ZG9WTU5BWmhxTUdXenhyU01JU1pUQk5JZ2dPenNZakJqOUFkOUNtN0t2X0hpWHFiZzhzS3g3dmhmZ3hZOTBYaEZUZFl1SUdMdFFJeU1Hbjh3N3E5bVNGeU5DZ0lQNlFDUDlUSDJ2emNsd1A1ZW9LTGdJaEhjMnI2dEdCdDFGY1h1SnBxVnhvbmJDd0tpbWc?oc=5) |
| FOX21 News Colorado | CDC seeks source of parasitic outbreak linked to ‘explosive’ diarrhea in multiple states | [Source Link](https://news.google.com/rss/articles/CBMiugFBVV95cUxQNlJOWUNtSndsN1ZGMXlKNVZQQXBOOWFVQ2JNVmp5S0dOSkJ5a1gyeDJMZlJnQnNfSFZyN2NmeVEzV1NQY2tBamQ1Y2d6VnNyNklmeEpZNk1NbnJvWFdYUnh2NFJKZ2ppbHV0aXg4RUpaVFNoQWtST0NhSlFjSVpPT2ZubXd3TXRiR0IzdFpERHI3WHh1R0hyUDBSZXJmMFdyUXg0TzRPX0NDcXU0LS1COHpVYVpvSkY0X0HSAb8BQVVfeXFMT3hnamQ0MkRXQUN6bWEzQndIQ2dLbFM4cHNKWTMtbWhMQjdzbW1NLUtfR3NacVVOOVF5Zm5GYjRGQXhrbEZEMkNfa1IxYVBJZnp4QzVQdWM4dzk1ek5KTll0Q0pQR3hSWWhrWHNDSGJCSDhnNUZBOG12eFg4U0hTSG9GcEZ6dXpULTQzY1JKV3Nzd3pUYUtVTWt) |
| The Columbus Dispatch | Outbreak of parasite causing explosive diarrhea spreads to Ohio | [Source Link](https://news.google.com/rss/articles/CBMiowFBVV95cUxOQWtONV83LTZkZHZfUWVpd19rbWM0YllJU2U5UmVvRjQ1bVJ4MHo3RTMzQlVTVHNpM0VXOWhIbDdDeTRiM1daNGl1WDhEZTMwWTlmaktYZzRWbHk3SkMxeWVkZEQyc0kyb054VWQwUVg0TWR1dURpRFNRbURoeWw4TUg4aEtkWndlVlk3djFFU0t0aVBzYVU4a3FtQVg1X0NreFJV?oc=5) |
| WILX | MDHHS investigating ‘sudden and large increase’ of Cyclospora infections in Michigan | [Source Link](https://news.google.com/rss/articles/CBMiqAFBVV95cUxPYU5jRm9oLXczODJlWUlUMTlIOVMyalk2X0tiVEphZ0V2bl9kdW52Y283dGFLRE5zZkpsdVY1VUI0ZGVjbVM2WHZON296aUtfVzg4MExBd0Vrblo2VWFUVVh0UTBlWHJfMXZDX1ZZRDFVUTZtUnh4ZWNtS05Lc01td3VPbXBsSGJzNkdJbGlFazBXQzJ1dVNQcVFLaHY1WFRlS3FyZ1loWFDSAbwBQVVfeXFMUHp1ak1YYkVuNVgxMXVDZUdVUU9ZQVd4Zm5jVEJacXI3ZkpfSmhRZjJiS1hERlVHTDF5YlNTdnBhRzZWMU1scjJOcUlxUk53dXJVZG5tbW53X0FwR1l3aWpkdlRUaFk2aVpEUHVyT05ISzFab0xpVl95MEVsSEFQSkV0Zk1lc2tRTG1meUU0RXJGb1RiLTcxbTBtNERoVDFJTEt3b0tlRDdCbW0) |
| Fox 59 | CDC seeks source of parasitic outbreak linked to ‘explosive’ diarrhea in multiple states | [Source Link](https://news.google.com/rss/articles/CBMiwwFBVV95cUxOcnZ0YjBYMnh0N0lPZXlnYmt5M0ZjZWg3NjBJVmFWMnUxcFJ1OHFmcEZBdHNmZHFrT1pqZWNLWnpndzBLckNCb0oyVXU4d2c0WW5HXzBCQmlqaTN0bHJlUmJnZnUwLTNOaU54RVhKREJYcTRuNkpYaENQeVNhYTFOMm9sTjdOTjQ4RFdQcVJxWkd3N0VDcVd3WlZaRDkyQUxTVXZXUTlnT3N2Y2wtNzlaMGdBemp3cU5zNlNmdEs5ZUlMX0HSAcgBQVVfeXFMTTFncWVvX0QzLTJmd1BxY2RfTlhYMUZaMFdZYUg4NGtmOG5VVU5wNFE0VS1wZENGRWoxN1paTmxxUFgtbDZ6NWlZVXpacEQycHJJSFBjZGFnS2Z2VnlhY3ZsUWVDbWRWTUNqTGJocFVkVmxzMGthbTNXVGtrVUI3RlBXNmhUckE1WjJfRXBxZWl) |
| WLNS 6 News | String of cyclosporiasis cases confirmed in Shiawassee County | [Source Link](https://news.google.com/rss/articles/CBMioAFBVV95cUxOaE1CLTc3QjY4bFcyTTYxS2pGOHQ1ZmtLbkNYQ0cxM0JaT3ptZmlZTG43bG8wMHg4RHlDdV9CbUNXSHVYQ0I5YkF6Z2x4TC1lTl9nb2V0TGJxOXhtSFpINnQwZVBDTnhWSHE5dWZRR2hnUFVrMFdSaVVvWDNETTJHN2l3eHptVlVrZDJnbC1aWUNKb01Qc2s3S1lPcWFMVkdt0gGmAUFVX3lxTE5GRFM4b2FSWmp4cDB0Q0FSdVV4b3ZhcmxQamVPbXcyV09MamI0R0JzRl9wODlZeHlNS0ptQVk5OFJnSHZGT3BxY2ZNN2k5eVg0ZGlFNmg2b2JOR2dacEV5Q3hGMDhnTnFhREJzc2E1ekZBM29ITUMtUGxJaDhUV1loZy1hWklPRzQ4azZCbWQ0V2I2Qk9jVldLdXZqUmRCNTByZmFsNUE?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-07-01/cdc-searches-for-source-of-parasite-linked-to-explosive-diarrhea*