Herd immunity without evidence of viral circulation during seven years of vaccination with Porvac®, a subunit vaccine against classical swine fever.
Subunit vaccines against classical swine fever (CSF) have been proposed as a safer alternative to modified live vaccines. Porvac®, based on the chimeric protein E2-CD154 (fusion of CSFV E2 glycoprotein and CD154), was registered in Cuba in 2017. This study reports seven years of Porvac® use in the Isle of Youth. In Nov...