Abstract
Porcine circovirus 3 (PCV3) is a recently discovered virus that has been detected in the swine population worldwide. PCV3 infection has been associated with several signs, but its pathogenicity is currently uncertain. This review article aimed to analyse the PCV3 strains that circulate in different countries in North and South America. We demonstrated the main regions of polymorphisms in the capsid protein structure. Furthermore, we found that PCV3 has at least six different lineages circulating in the Americas. Additional studies are required to determine the role of PCV3 in different clinical syndromes and its epidemiology in swine herds in North and South American countries.
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