# West Nile virus detected in mosquitoes from 13 Orange County cities

> **Open Intelligence Dossier** · First detected: 2026-07-09 02:07 UTC · Category: Health

## Executive Summary
4 news sources are covering this Health story right now — PULSE is tracking how fast it spreads.

## Intelligence Brief
"West Nile virus detected in mosquitoes from 13 Orange County cities" is generating significant coverage in the Health category, with 4 articles from 4 distinct sources tracked by PULSE so far.


Outlets currently covering the story include ABC30 Fresno, KCRA, NBC Los Angeles and KTLA. PULSE measures a story's velocity from how quickly new articles appear and how many independent newsrooms join the coverage.


This brief was generated by PULSE's extractive engine from coverage metadata only. The latest headlines from every source are listed below; the velocity chart shows how the story is developing in real time.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| ABC10 | First West Nile virus-positive mosquitoes of the year detected in Placer County | [Source Link](https://news.google.com/rss/articles/CBMi9AFBVV95cUxPdXZmS0VYc3luLUQwdlhjQ3pQSkZ0M01Iak9MUWdiSmM5bGo5TWljY3ozTjJETzdfS2QzRjBvMWJBR2RlRWZUbUI1cjJCdENRR1lQWXpvTEtrbFk1eVlacXViSDRNMFJnNURvWEJYRElpQWFnN1FXUDEwaF9iMHJ6ZVJENWJndXpRQ1VvZk1lUk1iV1pDWGJEZ0xyRlJYN0N6d25kcDY1X0N4STlFUlhvMWpjLXZoanBTUnVGVEhFVmpWTDh5MEYxRGNIS09vWkJFZE0xU0YtSU1yQjhEZ0NHWEx1dk82NjR6SWh2b3JRQzBDdkFS?oc=5) |
| Sacramento Bee | Amid national surge, officials find 1st West Nile mosquito sample in Yolo County | [Source Link](https://news.google.com/rss/articles/CBMia0FVX3lxTE5EMnRqRzAwR0oxTjltMHZFR1p1aVdDQnNqTzZZYUd4NWxkdEh2T1k1VC1oTi02TVlGOXcwQWxGZ2s1SDc1RlZKOHIzZ1hYSGdGZXZEMS1iaXhfMU05VjM3Q0N3R0RxMGFQS1pn?oc=5) |
| News Channel 3-12 | West Nile Virus Detected in Ventura County Mosquito Sample For The First Time This Year | [Source Link](https://news.google.com/rss/articles/CBMi0gFBVV95cUxPN1kxc2pYWGhiUWtDOHZXT2VHQzNUZjlXVWlNSUlpTnIxMnVqX0N5T1hZb1p5MEVVUlZhNTFUQlVremZMb2ZEMGY3OWxkOThvR1hvcXl6bWRuRmRtdFVnMDRaREF4NkZWYVhrd1BQeXpoOHlkTjZRV1plbF8zVjJQd2Uzby1qMnQ0RmRoMmlCZ05vanZueHltLWVVR3Y5Q0NuXzdDaHFISWFsQ0VwM0lqR0dDMDNPdlJWajNIMWpUcVlpZnMzQzcwaUR5bC1sUzluR3c?oc=5) |
| Yahoo | Mosquito sample in Yolo County tests positive for West Nile virus | [Source Link](https://news.google.com/rss/articles/CBMingFBVV95cUxNVFRJUzFndll1S2NfTkRNdFNUU2tPWHVwaDVHY1dYZWQ3MWV2SkRRNjl3U0hNQ29BTEtSa2JZbHhkZnV6bUNPV2FqY3BBM3dONWNwYUJvcWlJVDhHVlhxcldUSEZPQ0doRVNLN3A3RHRUX09NMTEtT1ZFZ281YzNUMjU5NjVkeER0a1dIekxXTktvWXR4UWN4Z0steHE5QQ?oc=5) |
| Ventura County Star | Test showing infected mosquitoes underscores West Nile risks in county | [Source Link](https://news.google.com/rss/articles/CBMixgFBVV95cUxPRmFHcFctOWNpemtYMFJqNUFIcmJuZllFVF9xUFdaV1ZiWndnYmZtcnktVFJSWUludWxpTzNFaF8taWw3dXV5WXRyYUZqb1ZReDJ0S0hqVXhpUEJYTkwxM0VXVDRza1JNcEJWdkdQTmRmOWtIRnZ2WTVwTDRJWkRmcnZwS2E3c2Qydk5aVWJLbjF5aHE5SUt2N0k3YU83anUwbm1ONm1EMmdOeFpQMzJELXdGUzVJdVEtNS1sb2otbEMwbTNZRFE?oc=5) |
| Spectrum News | OC uses multiple tools to fight booming mosquito population | [Source Link](https://news.google.com/rss/articles/CBMixAFBVV95cUxQdUFSV3dRTWdRZ25LNG5iYmJobXJLUGdMbkdvOVBjbWVISHM1UW1rWUN4WXNmeEVtZ3d4V2lWNDNESmlOZnR6eEY5b1VmNlJpOEN1amVOVWJ2Vlc5TDhHdkFqUkJOVjJyTmVodDNlNGVWbmZ2UExhSkZ4STh1aG5La3hvMS02LU1vdmozYUVzVk5rd1FEcjZ4ME1IMFJQaEZxNG9QY3lzUF9CVGJBdzI5NjlUOHlHUmRwNVVjbDlYTDRDMlNy?oc=5) |
| Spectrum News | OC uses multiple tools to fight booming mosquito population | [Source Link](https://news.google.com/rss/articles/CBMitAFBVV95cUxPZmZZLWRNY3lmc3NiLURqbHFqY1R1b2pMRzRLT3VIcHh6cUxxSWtrZ281dUp4eFMwM3h5QlZRX0paVm41aW5PVGNJdXZvYnhXMEJzOHVGZ3NaNzVmQXp6bjhpVXFuZTZWdWZBdUhOUTB3ei1EcUpxRW1Rdmd1ODFCbURCVlVyX05Cb3Vzcld0Vm14d21PSENGREc4TWFfWVNyRm4wRHNjUkxrNlpoQ21USGxJcGg?oc=5) |
| ABC30 Fresno | Mosquito tests positive for West Nile Virus in Merced County | [Source Link](https://news.google.com/rss/articles/CBMijwFBVV95cUxNcFpUUWhoNmpSZ2UyX1JOMW5qenkyX2ZWNWh2MGc1c2NEYk9ZaXJSUWpjLWZjNVBCYXZrdGZnNUd1OHcwUGZqM29IRGNkemoyWmdVSklTMVNZVWxxUWstaEt0NElEYzU0Nm04ekNkdE93ZngtUzhRWklENmVSUDVLbXM3bGFxR2VUQVdGYkpzRdIBlAFBVV95cUxObkJtSGRlODRDdjNUb0xpb0NSc21KNlpHczdxOUFBS1RfTDNEVWVIUlNza0Z0YTZ4XzNwM2ZIM2VwbFNpT0UyMlBFZXhrczZpYmZiNnM2YVZ3T3lXTFExekFnLVVCSzhIa3AwVUVoYlA5ajFEMW1XT1Y4YXRhZXdWRmxzb3BCZjBWZWpZT2g4SHBka1F4?oc=5) |
| KCRA | Yolo County mosquito sample tests positive for West Nile | [Source Link](https://news.google.com/rss/articles/CBMimgFBVV95cUxPWG13RllSMWxuVHJYUjBJeWw0Qk1aaWYweWJpVXZ0bUhMRzBVMl84UXp0Mkd1aFQwZV96ZUdUaGMxUDFyVkZ5UW5YVHZWWUdyaTBrZmpVTWxFVHMtczVpV1h5TmY3ejZzN2dxOXllZVJ6NGRIR0VRWHpNR29GUjJOb2xhTHg0dW52bzFSWTdNNTY3ZnJsZWRSOTln?oc=5) |
| NBC Los Angeles | Ventura County detects first West Nile virus-positive mosquitoes of 2026 | [Source Link](https://news.google.com/rss/articles/CBMivwFBVV95cUxNWGFSbU8wUHUySGVEdDBFRDlac1k3X0d4ejAzLXpUbG9tWEZ1SU1UalEtbVpUbl90WUxIdmV0NWNMT1N6QjN4aWVZZXZPQUlLWEgtRTd1Nk1wTGJmbWZtdnFYS1ZrLUpDcnRTMjRiX2g1ZFhLTjRwaGJIVmZDbmpIaUt1S2t5c0tGaTc3NXkybVFDbGdmM0dPdlBZZDQwb2ZGeGU3d1VEbXJkTUYzbFBFZDF5TkFWUTl4dVJsX0FDQdIBxwFBVV95cUxQU2pZRjFsZmhxUHQ0cTF0S2lFU1RMSkFkLVB3U1kyMUNOc0xEYkpJVkxob2NEQ0t5WjJWcHU4UzNvZVRHZEROeUFhX1pfVzRxOGcxNU5JTGZsSHJtSWFoaXJMWnZDTzhZa3l1Nm5mTnVCV2s5Z3cxQWRwdHZROFlsRkhRaVN2YnlvRk9BLWN3WC0xUXh) |
| KTLA | West Nile virus detected in mosquitoes from 13 Orange County cities | [Source Link](https://news.google.com/rss/articles/CBMiowFBVV95cUxPMzM0Q0k0Z0RYdU1xaEJlTTJqZUJzZmZiY0ZUd0doMjVMcFd5WmY2X2NrTjRFN2tYc2VVX0M1Q2MwOElZYUI1dm5ORi0yX2hfa04zeDhVbXBHbkd6QXNJdFdDcnpERkE2NEFsaEFha0NKZHRIR1lYNXYzd2JneTBEYmhmMzJoeER4TkVCOFpleUhqNnRpVS03MWQ0eFhuNmFQOW1Z0gGoAUFVX3lxTE1HTUxyMGZmc1lSSHNEdnI0VGhiN25rMER0aG1vRVlLeGlIQWhCaTVFSTVSdWhiOUs2ZU92Um1UZHR4Q1hRY3JrNWdPUnVGdFpleWlTRVd1NVZfczk5cmoyajl0ZDJuX2czOHd1OW9ReU80QWRqTFp0eWNzd09MMER6ZWZuR2FfazNvdjN4Z1hoeENYTHBtZTl0V3BuMWlHSlNQZFNaQnZuYw?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-07-09/west-nile-virus-detected-in-mosquitoes-from-13-orange-county-cities*