Panton-Valentine-Leukocidin-positive Staphylococcus Aureus By Dr Jensen Ang Panton-Valentine Leukocidin (PVL) is a toxin produced by some strains of Staphylococcus Aureus which are associated with an increased ability to cause disease. Dr Jensen Ang tells us more. By Peter Featherstone 2nd May 2017 Education JVFICU Seminars Save article as PDF Share Article