Gumboro disease: study on vaccine and field samples

The research is composed of three papers as follows: "Evaluation of the antigenic and immunogenic relationship between field samples and vaccine samples of infectious bursal disease virus by western blotting". "Infectious bursal disease: evaluation of the pathogenicity of vaccines marketed in Brazil in specific pathogen free birds" "Infectious bursal disease: evaluation of maternal immunity and protection conferred by vaccination on the first day of life , against challenge with a very virulent sample of the virus.