Multiplex quantitative PCR assay for porcine circoviruses 2 and 3 and its application for measuring infection rates at different stages of pig production - Zhen Li; Shuaiyin Guan; Jiaying Zhao; Yuhuan Chen; Yang Han; Ang Tian; Saisai Zhou; Huanchun Chen; Yunfeng Song (Archives of Virology, 2025)