Retrospective Study Reveals Decades of PCV4 Circulation in Spain

Abstract excerpt

Porcine circovirus 4 (PCV4) was first identified in China in 2019 and retrospectively traced back to 2008. However, unlike other circoviruses, its distribution appeared to be largely confined to Asian countries until recent reports from Spain and the United States. This study aims to enhance knowledge of the past and present circulation of PCV4 in non-Asian countries, particularly in Spain and in wild boars,...

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