Article
Protection of Chickens from Infectious Bronchitis by In Ovo and Intramuscular Vaccination with a DNA Vaccine Expressing the S1 Glycoprotein
1 Apr 2003
Abstract excerpt
We have constructed a DNA vaccine (pDKArkS1-DPI) expressing the S1 glycoprotein (Arkansas DPI) of infectious bronchitis virus (IBV) to examine protective immunity after in ovo and intramuscular DNA immunization. Birds receiving in ovo DNA followed by live virus vaccination at 2 wk of age were 100% protected from clinical disease. Birds receiving only live virus vaccine or only in ovo DNA vaccination were < or =...
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