Effect of monovalent and bivalent live attenuated vaccines against QX-like IBV infection in young chickens.
Poult Sci
; 102(4): 102501, 2023 Apr.
Article
in English
| MEDLINE | ID: covidwho-2287484
ABSTRACT
Since 1999, QX-like (GI-19) avian infectious bronchitis viruses have been the predominant strains in China till now. Vaccination is the most effective way to control the disease, while live attenuated vaccine is widely used. In the current research, we evaluated the effect of several monovalent and bivalent live IBV vaccines in young chickens against the QX-like (GI-19) IBV infection. The results showed that monovalent 4/91 and bivalent Ma5+LDT3 vaccines could provide efficient protection in day-old chickens that reduced morbidity and mortality, ameliorated histopathology lesions, and reduced viral loads were observed. These data suggest that vaccination through nasal route with monovalent 4/91 or bivalent Ma5+LDT3 in day-old chickens could serve a safe and effective vaccination strategy for controlling QX-like (GI-19) infectious bronchitis virus.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Poultry Diseases
/
Viral Vaccines
/
Coronavirus Infections
/
Infectious bronchitis virus
Type of study:
Experimental Studies
Topics:
Vaccines
Limits:
Animals
Language:
English
Journal:
Poult Sci
Year:
2023
Document Type:
Article
Affiliation country:
J.psj.2023.102501
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