Overview BOVILIS® 20/20 VISION® 7 with SPUR® has been shown to be effective for the vaccination of healthy cattle against disease caused by Clostridium chauvoei (Blackleg), Cl. septicum (Malignant edema), Cl.novyi (Black disease), Cl. sordellii and Cl. perfringens Types C and D (Enterotoxemia) and Moraxella bovis (Pinkeye or infectious bovine keratoconjunctivitis).