South Dakota

Avian Influenza H5N1 (Bird Flu) in South Dakota

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.

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Symptoms

Fever
Cough
Sore throat
Muscle aches
Conjunctivitis (eye infections)
Shortness of breath
Diarrhea
Pneumonia
Respiratory failure (severe cases)

Transmission

Primarily 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

Prevention

Avoid contact with sick or dead birds
Use PPE when working with poultry or dairy cattle
Do not consume raw milk
Wash hands frequently
Report sick birds to authorities

South Dakota Health Resources

Local health department information and state-specific prevention guidance

We're Monitoring South Dakota

Our AI-powered surveillance continuously monitors Avian Influenza H5N1 (Bird Flu) activity across South Dakota. We track data from state health departments, local hospitals, CDC reports, and 50+ global health sources to provide early warning of emerging threats.

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South Dakota Health Department

For official state health alerts, vaccination locations, and public health guidance specific to South Dakota, visit your state health department's website.

→ South Dakota Department of Health → CDC Avian Influenza H5N1 (Bird Flu) Information → CDC Health Topics

Understanding Avian Influenza H5N1 (Bird Flu): Key Questions

Whether you live in South Dakota or are traveling there, knowing the symptoms, timeline, and when to seek care helps you act quickly if exposure occurs.

When to Seek Care

Seek care if you experience severe dehydration, bloody stools, high fever, or symptoms lasting more than 3 days. Children under 5, adults over 65, and immunocompromised individuals should seek care earlier.

Emergency symptoms: Severe dehydration, inability to keep fluids down for 12 or more hours, or neurological symptoms require emergency care.

Expert Resources & References

Trusted information from leading health organizations

CDC

Official guidance from the U.S. Centers for Disease Control and Prevention

View CDC Resources →

WHO

Global disease surveillance and guidelines from the World Health Organization

View WHO Resources →

Research

Latest peer-reviewed research and clinical studies

View Research →

Medically Reviewed Content

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: 2026-08-27

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