A Shift in Porcine Circovirus 3 (PCV‐3) History Paradigm: Phylodynamic Analyses Reveal an Ancient Origin and Prolonged Undetected Circulation in the Worldwide Swine Population

The identification of a new circovirus ( Porcine circovirus 3, PCV‐3) has raised a remarkable concern because of some analogies with Porcine circovirus 2 (PCV‐2). Preliminary results suggest an extremely recent PCV‐3 emergence and high mutation rate. Retrospective studies prove its circulation at least since the early 1990s, revealing that PCV‐3 could have been infecting pigs for an even longer period. Therefore, a new evaluation, based on an...