Recombination in Vaccine and Circulating Strains of Porcine Reproductive and Respiratory Syndrome Viruses
Em2007, a porcine reproductive and respiratory syndrome virus (PRRSV) variant with a unique 68 aa deletion in Nsp2, was recently isolated in China. Phylogenetic and molecular evolutionary analyses indicated that Em2007 is a natural recombinant between a vaccine strain of PRRSV and circulating virus....
Main Authors: | , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
Centers for Disease Control and Prevention
2009-12-01
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Series: | Emerging Infectious Diseases |
Subjects: | |
Online Access: | https://wwwnc.cdc.gov/eid/article/15/12/09-0390_article |