Highly pathogenic avian influenza H5N1 has caused 71 confirmed human cases across 13 US states since 2024, with ongoing exposure through dairy farms and poultry operations. As of June 2026, cases have been confirmed in California, Colorado, Iowa, Louisiana, Michigan, Missouri, Nevada, Ohio, Oregon, Texas, Washington, Wisconsin, and Wyoming. Three cases involved unknown exposure sources. Two deaths have occurred. CDC considers current risk to the general public as low, but monitors closely for signs of person-to-person transmission. Track Avian Influenza H5N1 (Bird Flu) activity and outbreaks specific to Wisconsin.
Open Web AppPrimarily through direct contact with infected birds or animals (dairy cows). No confirmed person-to-person spread in 2026 US cases.
Contagious Period: Not established for human-to-human; 3-5 days from symptom onset in avian cases
Local health department information and state-specific prevention guidance
Our AI-powered surveillance continuously monitors Avian Influenza H5N1 (Bird Flu) activity across Wisconsin. We track data from state health departments, local hospitals, CDC reports, and 50+ global health sources to provide early warning of emerging threats.
Get instant push notifications when Avian Influenza H5N1 (Bird Flu) activity increases in Wisconsin or your specific county.
For official state health alerts, vaccination locations, and public health guidance specific to Wisconsin, visit your state health department's website.
Whether you live in Wisconsin, are traveling there, or have family in the state, understanding Avian Influenza H5N1 (Bird Flu) prevention is essential. Follow these evidence-based prevention measures:
If you experience symptoms of Avian Influenza H5N1 (Bird Flu) in Wisconsin, contact your healthcare provider immediately. Early diagnosis and treatment improve outcomes significantly.
Emergency symptoms: If you experience severe symptoms, difficulty breathing, or signs of dehydration, call 911 or go to your nearest emergency room.
Trusted information from leading health organizations
Global disease surveillance and guidelines from the World Health Organization
View WHO Resources →Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-06-24
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