Question of the week - Week of 27-Jul-2017

How many subtypes of the PCV2 virus have been determined to date?

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See a clue in the article Molecular genetic analysis of PCV2

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PCV2 can be divided into 4 main subtypes: PCV2a, PCV2b, PCV2c and PCV2d. In addition, 6 intermediate clades are described between these subtypes. PCV2 evolves much faster and is very diverse compared to other DNA viruses.