Owners should contact their veterinarians immediately if they notice the following clinical signs of illness: nasal discharge, ocular discharge, facial swelling, swelling of the wattles and comb, sneezing, cough, diarrhea, swollen joints, lameness, weight loss, lethargy, decreased egg production, and sudden death.
If you have sick poultry or experience increased mortality in your flock, Delaware backyard flock owners should call the Delaware Poultry Health Hotline at 302-698-4507 or email poultry.health@delaware.gov and provide your contact information, flock size, location, and concerns.
The Delaware Department of Agriculture reminds all horse, livestock, and poultry owners to practice good biosecurity and isolate new animals from the general population for 30 days to observe for signs of illness. Poultry equipment may harbor these viruses and bacteria, infecting the birds in your flock. Used poultry equipment should be sanitized and not used for at least 120 days to reduce the risk of spreading these diseases.
Source : delaware.gov