Journal article
Differentiation of foot-and-mouth disease virus infected animals from vaccinated animals using a blocking ELISA based on baculovirus expressed FMDV 3ABC antigen and a 3ABC monoclonal antibody
A blocking ELISA that differentiated foot-and-mouth disease virus (FMDV) infected animals from vaccinated animals was developed which uses baculovirus expressed FMDV 3ABC non-structural protein as antigen and monoclonal antibody against FMDV 3ABC non-structural protein as capture and detector antibody.
Sera from naive, vaccinated and infected cattle, sheep and pigs were examined. The specificity of the test was high. Non-specific reactions observed in particular in sera of cattle and sheep could be removed by filtration and inactivation. Positive reactions were obtained for sera from cattle infected with all seven serotypes of FMDV.
The test detected antibodies from days 7 or 9 following experimental infection of non-vaccinated cattle and sheep, and in cattle strong positive reactions persisted for up to 395 days after infection. In vaccinated cattle that became carriers after challenge with homologous FMDV, positive reactions were obtained in all but one case.
In some of these cattle the antibody response was detected late in comparison to the non-vaccinated infected cattle. The test gave results that compared favourably with two commercial ELISA's when used to test sera from cattle, pigs and sheep collected after experimental or natural infection. The blocking ELISA based on recombinant FMDV 3ABC antigen and a monoclonal antibody to 3ABC is a promising tool for FMD control and eradication campaigns, where vaccination has been carried out.
Language: | English |
---|---|
Publisher: | Springer-Verlag |
Year: | 2005 |
Pages: | 805-814 |
Journal subtitle: | Official Journal of the Virology Division of the International Union of Microbiological Societies |
ISSN: | 03048608 and 14328798 |
Types: | Journal article |
DOI: | 10.1007/s00705-004-0455-z |
3ABC protein, virus Animals Antibodies, Monoclonal Antibody Response Biomedicine Cattle Disease Virus Enzyme-Linked Immunosorbent Assay Foot-and-Mouth Disease Foot-and-Mouth Disease Virus Infectious Disease Infectious Diseases Medical Microbiology Monoclonal Antibody Positive Reaction Swine Viral Nonstructural Proteins Viral Vaccines Virology