Bird Flu Spreads in Poultry Across Europe and US with Isolated Human Cases in Cambodia and Limited Global Impact
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Bird Flu Spreads in Poultry Across Europe and US with Isolated Human Cases in Cambodia and Limited Global Impact
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Friday, July 25, 2025
This is Bird Flu Bulletin: Daily H5N1 Update, bringing you the top news and insights on the avian influenza situation. It's Friday, July 25th, 2025.
Top Stories
1. The European Centre for Disease Prevention and Control reports active H5N1 surveillance as new poultry outbreaks are confirmed in Northern and Western Europe over the past 24 hours. No new human cases have been reported in the region, but animal health authorities warn of continued risk in poultry-rich zones.
2. According to the World Health Organization, Cambodia’s Ministry of Health has detected one additional human H5N1 case since yesterday, bringing the country’s total to 12 for the year. The patient, an adolescent from Prey Veng province, is hospitalized with moderate respiratory symptoms after confirmed exposure to backyard poultry. Contact tracing is ongoing, with eight household contacts under observation.
3. The United States Department of Agriculture confirms two new outbreaks of H5N1 among commercial poultry operations in Minnesota and Indiana. In response, state officials are culling affected flocks and imposing tighter biosecurity measures. The CDC reiterates that public health risk remains low and no new human cases have been detected in the U.S. since early July.
Case Numbers Update
Globally, the number of laboratory-confirmed human H5N1 cases stands at 1,568 since 2003, based on latest data from the Centre for Health Protection in Hong Kong. There have been 20 cases reported in 2025 so far, with Cambodia and Bangladesh accounting for the majority of recent infections. Compared to yesterday, this represents a one-case increase globally, with no change in the U.S. caseload, which stands at 70 confirmed cases since 2024 according to the American Academy of Ophthalmology.
New Guidance
The World Health Organization and CDC are maintaining guidance for people in direct contact with poultry or wild birds, emphasizing the use of personal protective equipment and proper hand hygiene. The CDC is not recommending any changes to U.S. public health protocols, but advises clinicians to consider H5N1 for patients with conjunctivitis or respiratory illness and recent animal exposure.
Expert Interview
For perspective, we spoke with Dr. Leila Sanchez, epidemiologist at Johns Hopkins.
Dr. Sanchez: "The continued appearance of isolated human cases, particularly among those with direct animal contact, suggests that while bird-to-human transmission risk remains low, surveillance and occupational protections are critical. We do not see evidence of sustained human-to-human transmission at this time. Still, vigilance is essential, especially in areas reporting animal outbreaks."
Looking Ahead
Tomorrow, the World Organization for Animal Health is expected to release an updated status report on global animal H5N1 activity, with particular focus on containment efforts in Southeast Asia and Europe. U.S. authorities are set to issue a briefing on biosecurity compliance in commercial poultry operations. No major changes in human case counts are anticipated, but health officials urge continued caution for those working in affected regions.
Thank you for tuning in to the Bird Flu Bulletin: Daily H5N1 Update. Come back next week for the latest global developments and expert insights. This has been a Quiet Please production. For more, check out QuietPlease.AI.
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