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Commercial vaccines used in China do not protect against a novel infectious bursal disease virus variant isolated in Fujian

7 Sept 2022

Abstract excerpt

BACKGROUND: Since 2018, atrophy of the bursa has been found among vaccinated chickens with high antibody titres against infectious bursal disease virus (IBDV) in Fujian, China, suggesting poor vaccine efficacy against circulating IBDV strains. METHODS: Novel IBDV strains were isolated, and vp2 and vp1 genes were sequenced and used to carry out phylogenetic analysis. Pathogenicity was investigated using 21-day-old...

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PMID: 36073006
DOI: 10.1002/vetr.1840

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