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

> **Newsylist Open Intelligence Dossier** · First detected: 2026-07-01 08:15 UTC · Category: Health · Sources: 17 · Current Velocity: 18.55

## Executive Summary
The CDC is investigating a multi-state parasitic outbreak causing "explosive" diarrhea, with cases now reported across 17 states.

## Intelligence Brief
The Centers for Disease Control and Prevention (CDC) is searching for the source of a parasitic outbreak characterized by "explosive" diarrhea. The illness has spread to 17 states, including Louisiana, Illinois, Ohio, and Michigan. In Michigan, health officials are investigating a "sudden and large" increase in infections.


Coverage from FOX Weather reports that 140 Americans have been sickened. Outlets including The Hill, People.com, and various local affiliates such as WAFB and WGN-TV highlight the rapid spike in cases and the specific symptoms to watch for. In Michigan, the Detroit Free Press and WDIV Local 4 identify the parasite as Cyclospora.


Investigation efforts are currently focused on identifying the source of the foodborne parasite. Coverage from local Michigan outlets indicates that Shiawassee County has confirmed a string of cyclosporiasis cases.

## Verified Facts & Key Claims
### How many people have been affected so far?
According to FOX Weather, 140 Americans have been sickened.

### Which parasite is causing the outbreak?
Reports from the Detroit Free Press, FOX 2 Detroit, and WDIV Local 4 identify the parasite as Cyclospora.

### How many states are involved in the outbreak?
Coverage from People.com and WAFB states that the illness has spread to 17 states.

## Key People, Organizations & Locations
Michigan, Cyclospora, CDC, States, Illinois, Explosive, Outbreak, Louisiana, Parasitic, MDHHS

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| CBS News | Cyclospora illness counts spike in Southeast Michigan, health officials investigating cause | 2026-07-01 18:50 | [Source Link](https://news.google.com/rss/articles/CBMikgFBVV95cUxPYTJ2Q0tobnVvSzRvY2tYYldkaTRqdVhiSUoxNXNWeVY1Zm9xWUl1WS0xSXhZLWV3RzdnVXBvQjJ1RHFHZk1kNzZ2enRnTDg0Q3NnUWhTWU91THg5ekNtYmU4SWkzU2pmejdFdV9XVEYwV0tZS2hIY3VYeVd2Z01lbnBJcWJlMG5aN2Yya2JkVUdnQQ?oc=5) |
| WAFB | ‘Explosive’ diarrhea illness reported in 17 states; Louisiana included | 2026-07-01 18:50 | [Source Link](https://news.google.com/rss/articles/CBMingFBVV95cUxNUkg2QnJNcUxzaEVTWmRNS04xVzRwTzJPRDdUTEJubnJRdUpmMjlMOGZoTk54SFkyVGFUSG14aUlwWWFJTUlKTk9NTlVFU1I1TlRPVWk5TnpjX0lzNWRvUGY4SVpqTld4bnRiNlF2ZTg3OERJcjVJT0FHRkdNZU5oMGpmdkN1enZNWTVqSFhWdGJMQ0R1QThPbVZvbUVUUQ?oc=5) |
| The Hill | Parasitic illness cases are spiking: The symptoms to watch for, including ‘explosive’ diarrhea | 2026-07-01 18:50 | [Source Link](https://news.google.com/rss/articles/CBMi0wFBVV95cUxQRnBsSEJuR05NQlZtaGl3azJXZFhNUjJRck5yMHdmSXZtLVlTV2lxU1NFamhyTjhjU1JXMEk3c2JSS2ZRaUEtVnlVRy1YM3lNNmpCb1lwSE0zT1d5d1JhTHdFb2dEdzFiSHAybkNvV3haeXFwVXhib0Exd1ZmOG03V3BnZmNYRnYzMlpoU0x0WTM0bnZqOU1aX0RBVHI0V2cyWWtLV2ZUZ2NyVzNXYllON3VkaUMtbk94WEVDMGtScGhRVlF4VFZkQXBpdVA1MzNQa3dR0gHYAUFVX3lxTE1uVHFnREFIQWVTeDluLTEyY1JXaWxsUGRaX3g5bVVVdnNZVno3T2Z0MVFHaDRLcWJXZkdnSVdpanpDQmJpekVyWWhoRmxnUzRicGU5S0szQ0tjZkYyRDlXR0N5Y1hTMzExcnJJa2xUT2NpTHpDNDhYX3F1QlFMNzZ) |
| People.com | Foodborne Parasitic Outbreak That Causes 'Explosive' Diarrhea Has Spread to 17 States | 2026-07-01 18:50 | [Source Link](https://news.google.com/rss/articles/CBMipgFBVV95cUxPOFdzbXpDejByblg3TFNYMkotSUJEaXZ1dk1Yb0JWSlN0ZGEzckV2TlNMamZfUDNnTHVWQnhhdDZMdmc0UXNxZ3FQQWMzbWU0UWhLVmdoR2lQMUpCMlBZYU0yOGZKWnpySmVjall0TS1jTS1LV0ZYSmJOTlI2M0ROMjEyREt4bGkzTmdtN21leHZwcjBnMHNnMnNCR2NUSDEyckdYMVl3?oc=5) |
| The Hill | CDC seeks source of parasitic outbreak linked to ‘explosive’ diarrhea in multiple states | 2026-07-01 18:42 | [Source Link](https://news.google.com/rss/articles/CBMimwFBVV95cUxNa3ROT1c5aWQtT3dvbjlscTJFTkVrMG9yZmZVdmhSLXJmajNFWVdueWtOaFMtd3BuWG1LdlZ2eV9MeVRIQXd5NlI4bXVFX21kYm1kaW1abWpPWG1kM19mMTdZSDVGTzVOTHA3U282ZFpOZmJaUUoxcmV5QWR5RHRUTFBPam5BZnNzQlZVYUFDQ0tOUkZoemkyd0dfb9IBoAFBVV95cUxQd09GX0U2VGUwYTNpWW1VX0N3Ti16YlVaTDZiOEdzbXM4S0Exd1ZNdXg5cnp6MU15NTZnNFdzcm82RU9kcDFSYmZhbG1xU3F5SE02c1BBaHBwMXlDUDhHSG5qTmRiRExpWWI1QWdwZ3plYVd0Yk95YkFFT0Ewd3VoalZXMzZLdngtcnBaUGFuMGFyVDBOQVgzY3hyeFE3ekxp?oc=5) |
| WGN-TV | CDC seeks source of parasitic outbreak linked to ‘explosive’ diarrhea in multiple states, including Illinois | 2026-07-01 18:42 | [Source Link](https://news.google.com/rss/articles/CBMi2wFBVV95cUxNSWR0OGszejRiUXhXbFctVVRzODFKeHdDcnhOcWhlOS1LUUxjRHVlTDB0bUtlNElLSEFyYnoxRGNEQ2c5aG4zR0p5Mlp1U2s3bVRwdU5PRHphTXgxdDlxaGtTR1RkRjhLSUplNmU1ZU13VFVFUFRVWkVFRVdNbE5uM3RYNjNKdkRLU0p4eDBaVTgyZGE2bTlpLUE5N3NpREJ2WHF2MUFNdzloZ3NpQlJPSEV6a2JHakVnM2pETC1NeDZfZWdUME9MUzhxZkRRS01xZHdMUWxUdHZNdW_SAeABQVVfeXFMTmhZVExNUHhid0pQNkg5WVp4WUEwa3ZPZnJ2U2RtMGF6dl81ZlFERTQzZGx0cEg4MnA1aGpfa1lIalRxQTlqMmxTVEdXbS1WSGgzRVo5aVRtTDhBQldTeGRMa1lXS29OeDVHcDZlNWt4Qkk5eXdXQ2l) |
| The Detroit News | Michigan tracking 'sudden and large' spike in illness caused by parasite | 2026-07-01 12:24 | [Source Link](https://news.google.com/rss/articles/CBMipwFBVV95cUxNRjhVM3FkZTJDMmtCdFllYjN2MVZkcWdZNmlNdGMyQTc2cXpwZFd2YmJ4TzlpRldiR0syQVJoWlhBc3JtQ1htX2Y3akE3WW5KWWtRM1dpT2I1MG9JcV8xYWdGeGlOT2tuZjQ3T0k1RzhlLWNONHNidnpCWlBVc21IMldVWFlCenlxMkhkcHlfa0QyV0RVc0l2X09KNmZOTzR0OXlrV1pORQ?oc=5) |
| Detroit Free Press | Tps to prevent cyclospora infection and explosive diarrhea | 2026-07-01 12:24 | [Source Link](https://news.google.com/rss/articles/CBMi0gFBVV95cUxQUWljbWF3QkozcEl0V2hYTEtaa2U5X0ZwdTZwOUVYX1ZNTFp1ejFWZEU3QXVFWHZxNHNQRHRHU2hOUE41ZG9WTU5BWmhxTUdXenhyU01JU1pUQk5JZ2dPenNZakJqOUFkOUNtN0t2X0hpWHFiZzhzS3g3dmhmZ3hZOTBYaEZUZFl1SUdMdFFJeU1Hbjh3N3E5bVNGeU5DZ0lQNlFDUDlUSDJ2emNsd1A1ZW9LTGdJaEhjMnI2dEdCdDFGY1h1SnBxVnhvbmJDd0tpbWc?oc=5) |
| FOX 32 Chicago | 'Explosive' diarrhea parasite hits Illinois as CDC searches for source | 2026-07-01 12:24 | [Source Link](https://news.google.com/rss/articles/CBMidEFVX3lxTFBUNGcwZ05EV1dXZ0JtYXBVeHVWSFdFUnc5NWN6VW9RTmUxbFpYckhCLUZIeW9UaDhIZGh6ckRxREdJbTF1UFJkak5iSEhYSUstRlZCLTNQQVdlYlh6Z042YWpmcG1vcUdUQm9ETW1VS3dEaU8t0gF6QVVfeXFMTXh5QVp6ZTR3Y01oMEI1d1JKTnFTci1QQm5NN1JVVHY3VnpCU1pmeDZkZXFwVnJkZkZOb3VuU0JFOEoxMS1BZ05jUkdiak1Xb1A5SDFhb1NMazN1NXNvSVRwa1lLb0dSVFZ5a2oxUTlxbWdpX2tpdFRwd0E?oc=5) |
| FOX21 News Colorado | CDC seeks source of parasitic outbreak linked to ‘explosive’ diarrhea in multiple states | 2026-07-01 12:24 | [Source Link](https://news.google.com/rss/articles/CBMiugFBVV95cUxQNlJOWUNtSndsN1ZGMXlKNVZQQXBOOWFVQ2JNVmp5S0dOSkJ5a1gyeDJMZlJnQnNfSFZyN2NmeVEzV1NQY2tBamQ1Y2d6VnNyNklmeEpZNk1NbnJvWFdYUnh2NFJKZ2ppbHV0aXg4RUpaVFNoQWtST0NhSlFjSVpPT2ZubXd3TXRiR0IzdFpERHI3WHh1R0hyUDBSZXJmMFdyUXg0TzRPX0NDcXU0LS1COHpVYVpvSkY0X0HSAb8BQVVfeXFMT3hnamQ0MkRXQUN6bWEzQndIQ2dLbFM4cHNKWTMtbWhMQjdzbW1NLUtfR3NacVVOOVF5Zm5GYjRGQXhrbEZEMkNfa1IxYVBJZnp4QzVQdWM4dzk1ek5KTll0Q0pQR3hSWWhrWHNDSGJCSDhnNUZBOG12eFg4U0hTSG9GcEZ6dXpULTQzY1JKV3Nzd3pUYUtVTWt) |
| FOX Weather | 140 Americans in over a dozen states sickened by nasty diarrhea-causing parasite as CDC investigates | 2026-07-01 12:23 | [Source Link](https://news.google.com/rss/articles/CBMipwFBVV95cUxQOHF5Tk4zMDJjYlcyOFJvbzdDVmRDdXpfa0Q4SFhBRXdEYnB6YmlSUG5WdFNXdDR3T1lHWGpuTlp5Q3BZMEh0OHVaQXhiTkhGWkFBeXkzSFNTaHlTbnNhU1RfYTFuQXZFTEZCUm9hQU5WRk9WZE42MEpkU3BrblppZmd0SzBzWFpxOWx2dklYSF9pSElsN3JfZ3BtbEtWZjFQZGxNbmh4a9IBrAFBVV95cUxNMWtVUUhzMEV5Wkg0OVBkbmM3aEdkZVBoRWZEYmV4bDhPWjNGWlhXaUxWaUhyQUcxZFNDME9zMGtNb0VRem15VHpNa0NMQ1QyNlQ1em9QMm1pYW1hbHptNFdna0hrZm9ueEJVMHVxWlI5OGd5OXpTU0ZJeW5lWUVOdnF3X1MyM3MzOUNsR3lKcjBNemMwNlRscEMwYXhQbzd5R1FuTV9ISTRiT1R) |
| FOX 2 Detroit | Cyclosporiasis in Michigan: Latest case counts and what to know | 2026-07-01 12:23 | [Source Link](https://news.google.com/rss/articles/CBMikgFBVV95cUxQR1NDUm5RN210cG00RFBpQlhRRndGUWFzTDRsMmpxZ3Jfd2hSNTdQcWNGU0NNcGkxS3RvWEhnSmM1eVdOV2NjNlR0djZjOXdXOUIxT0cxUzRmREpKUXRBVXNIbXpGVlBaOXNHZ0c1WUM2bVgzWjIyMTdfTVJyNzR5Y0t0YmM2dDhHWWJueHRZTGxUd9IBlwFBVV95cUxNTWNUaGdaTWV4UEFYNXZrRm1YbVhSMnZFampGd09mNmtteGpBdTFyWjR1YlNuOS00b1BBRy0wOFJfNWhQMGZ3dUZvX2dqZVRLZXRzci03WWIzc2hVZHFWVkRsenVPLWw1ZkstVERVYmlyaFdPZHpTVGZqZTI4QmZPSlVWMVpBVjZnVFhMVnRDMUxJU1Y0YjEw?oc=5) |
| ClickOnDetroit | WDIV Local 4 | Michigan health officials warn of ‘large and growing outbreak’ of cyclosporiasis | 2026-07-01 12:23 | [Source Link](https://news.google.com/rss/articles/CBMizAFBVV95cUxOWnc5SHJxS25JemN0bGhmVkhEV0NrMkVadDloXzRISmhSNVFuaDZ4ZVIyQ2w3X0Y4X1NwdVg0NlRSU0lrS2lRRTR1MGxSNjlZeWFkVm1ScmZZazB2UC1UZ2Vyc00wLXdkdDdwR09kVXdzZWstUEJTMGg0bmFtZFJha0ZDbktIVmpia215cVJrbUdDLWNIaFgtT0FWaXBnQmxhOHhoM21Rbm02Y0NBdkppaEpNbGFxUzNVLWVsOUl1amx6MUMwNmJBeV9LTE0?oc=5) |
| The Columbus Dispatch | Outbreak of parasite causing explosive diarrhea spreads to Ohio | 2026-07-01 12:23 | [Source Link](https://news.google.com/rss/articles/CBMiowFBVV95cUxOQWtONV83LTZkZHZfUWVpd19rbWM0YllJU2U5UmVvRjQ1bVJ4MHo3RTMzQlVTVHNpM0VXOWhIbDdDeTRiM1daNGl1WDhEZTMwWTlmaktYZzRWbHk3SkMxeWVkZEQyc0kyb054VWQwUVg0TWR1dURpRFNRbURoeWw4TUg4aEtkWndlVlk3djFFU0t0aVBzYVU4a3FtQVg1X0NreFJV?oc=5) |
| WILX | MDHHS investigating ‘sudden and large increase’ of Cyclospora infections in Michigan | 2026-07-01 12:23 | [Source Link](https://news.google.com/rss/articles/CBMiqAFBVV95cUxPYU5jRm9oLXczODJlWUlUMTlIOVMyalk2X0tiVEphZ0V2bl9kdW52Y283dGFLRE5zZkpsdVY1VUI0ZGVjbVM2WHZON296aUtfVzg4MExBd0Vrblo2VWFUVVh0UTBlWHJfMXZDX1ZZRDFVUTZtUnh4ZWNtS05Lc01td3VPbXBsSGJzNkdJbGlFazBXQzJ1dVNQcVFLaHY1WFRlS3FyZ1loWFDSAbwBQVVfeXFMUHp1ak1YYkVuNVgxMXVDZUdVUU9ZQVd4Zm5jVEJacXI3ZkpfSmhRZjJiS1hERlVHTDF5YlNTdnBhRzZWMU1scjJOcUlxUk53dXJVZG5tbW53X0FwR1l3aWpkdlRUaFk2aVpEUHVyT05ISzFab0xpVl95MEVsSEFQSkV0Zk1lc2tRTG1meUU0RXJGb1RiLTcxbTBtNERoVDFJTEt3b0tlRDdCbW0) |

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