Versican Plus Pi/L4R (Canine parainfluenza virus vaccine (live) and canine leptospirosis and rabies vaccine (inactivated)) is a veterinary vaccine used to protect dogs against canine parainfluenza virus, various Leptospira bacteria (including Bratislava, Canicola, Grippotyphosa, and Icterohaemorrhagiae), and rabies virus.