**BIRD FLU UPDATE: US H5N1 NEWS NOW**
Good evening. This is your Bird Flu Update for October 24th, 2025.
The United States continues to grapple with highly pathogenic avian influenza H5N1, with significant developments across multiple states. According to the CDC, the nation has now recorded 70 confirmed human cases since 2024, with exposure sources primarily linked to dairy cattle and poultry operations.
California remains the epicenter of human infections, reporting 38 cases, the vast majority connected to dairy herd exposure. Washington State follows with 11 cases, all tied to poultry farms and culling operations. Colorado has confirmed 10 cases, while other affected states include Michigan, Texas, Nevada, Missouri, Louisiana, Iowa, Ohio, Oregon, Wisconsin, and Wyoming.
The situation has evolved significantly in commercial agriculture. The Pan American Health Organization reports that between 2022 and mid-October 2025, 76 human infections have been documented across five countries in the Americas, including two deaths. Louisiana confirmed the first H5N1-related death in the United States.
Recent poultry outbreaks paint a concerning picture. USDA data shows detections as recently as June 2025, with major commercial operations affected. Arizona experienced particularly severe impacts, with multiple commercial table egg layer facilities reporting infections affecting millions of birds. One outbreak in Maricopa County affected over 2.2 million birds, while another impacted 1.5 million laying hens.
The EPA confirms that as of July 2025, APHIS has documented cases of highly pathogenic avian influenza in domestic livestock across 18 states. Since the beginning of 2024, over 1,761 flocks have been affected, spanning both commercial and backyard operations across nearly all 50 states.
Wild bird surveillance shows continued spread, with the Cornell Lab of Ornithology tracking 13,592 detections in wild birds, plus 1,052 in captive birds through mid-October. APHIS notes that detections typically increase during fall and spring as migratory birds spread the virus to their seasonal habitats.
In response to the ongoing situation, the CDC streamlined its H5N1 reporting structure in July 2025. Data on monitored and tested individuals is now reported monthly, and USDA animal detection data has been redirected to agency-specific platforms. This reflects an adjustment to reflect the current public health landscape while maintaining vigilance.
For the American public, the immediate risk remains low. Most human cases involve direct exposure to infected animals through commercial agriculture work. The USDA reports that affected cattle often show little to no mortality and typically recover with supportive care. However, poultry operations face continued challenges with significant flock losses requiring depopulation.
Compared to previous weeks, the situation shows persistent but managed spread. The virus continues its seasonal pattern, with fall migration bringing increased vigilance. The concentration of cases in agricultural workers underscores the importance of protective equipment and biosecurity measures for those in direct contact with potentially infected animals.
Health officials continue monitoring the situation closely, with enhanced surveillance in high-risk areas and ongoing research into transmission patterns and prevention strategies.
Thank you for tuning in to this weeks Bird Flu Update. Please join us again next week for the latest developments. This has been a Quiet Please production. For more information, check out Quiet Please dot A I.
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