The clinical diagnosis of VAERD is challenging because it requires a prior vaccine history and the evidence of severe disease symptoms through necropsy. Photo: Bert Jansen
A team of US researchers identified biomarkers associated with vaccine-associated enhanced respiratory disease (VAERD) following an influenza A virus infection in pigs for antemortem clinical diagnosis.
They published their findings in Veterinary Immunology and Immunopathology. Whole-inactivated virus vaccines are effective against influenza A virus in pigs. However, they have limited effectiveness against antigenically drifted viruses. In addition, administration of these vaccines may lead
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