Section 1. Avian Influenza Facts
- Source and Transmission
- Agent Characteristics
- Virus Survival
- Clinical Signs in Birds
- HPAI H5N1
- Human Concerns
Avian Influenza Biosecurity for Backyard Flock Owners
Signs of AI in Birds
Once a bird is infected, it usually takes 1-10 days before signs appear. That infected bird can shed the virus for up to 21 days to other birds. The best way to prevent the spread of disease is to know the signs of avian influenza and to respond quickly. 3
Birds may have a variety of different signs:
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Comb Discoloration USDA Swollen Wattles |