Korean J Parasitol.
1998 Sep;36(3):203-206. 10.3347/kjp.1998.36.3.203.
Immunosuppressive effect of Cryptosporidium baileyi infection on vaccination against avian infectious bronchitis in chicks
- Affiliations
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- 1Department of Parasitology, Veterinary School, Chonbuk National University, Chonju, Korea. jkr@moak.chonbuk.ac.kr
- KMID: 662565
- DOI: http://doi.org/10.3347/kjp.1998.36.3.203
Abstract
- Two-day-old commercial chicks were inoculated orally with 2 x 10(6) oocysts of Cryptosporidium baileyi and vaccinated with 10(3.5) EID50/head of a commercially available avian infectious bronchitis (IB) live virus vaccine at 4 and 14 days following inoculation. Chicks infected with C. baileyi were shown to have an immunosuppressive effect on IB virus. It is concluded that infection with the protozoon in early life may increase their susceptibility to IB.
MeSH Terms
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Animal
Chickens*
Coronavirus Infections/veterinary*
Coronavirus Infections/immunology
Cryptosporidiosis/veterinary*
Cryptosporidiosis/immunology
Cryptosporidium/immunology*
Disease Susceptibility
Hemagglutination Inhibition Tests
Immune Tolerance*
Infectious Bronchitis Virus, Avian/immunology*
Poultry Diseases/immunology*
Viral Vaccines/immunology*
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