Avian Infectious Bronchitis is a highly contagious respiratory disease found in chickens caused by a Coronavirus. The virus is mainly spread by inhaling airborne droplets expelled by coughing and/or sneezing chickens and can infect the entire flock rapidly. Infectious Bronchitis virus may also be spread through contact with contaminated equipment and clothing and can travel for considerable distances with the wind. Although the disease is rarely fatal, it causes a considerable decline in quality egg production that may be permanent.

Endemic Areas

The coronavirus responsible for Avian Infectious Bronchitis is found worldwide.

Clinical Signs

• Coughing
• Sneezing
• Noisy breathing
• Huddling
• Nasal discharge
• Difficulty breathing
• Poor egg production

Treatment

There is no specific treatment for Avian Infectious Bronchitis but antibiotics may be given to protect chickens from secondary bacterial infections. Any chicken suspected of having Infectious Bronchitis should be reported to the State Veterinarians or USDA Area Veterinarian in Charge immediately.

Prevention

Vaccinations are available for Infectious Bronchitis. The disease may be prevented from entering the flock by developing a sound vaccination program and following the suggestions in USDA-APHIS Biosecurity for the Birds program.

Public Health

Avian Infectious Bronchitis is not a public health threat.

Links

Infectious Bronchitis Virus -University of Florida