For active immunization of susceptible cats from 9 weeks of age to reduce the number of cats infected with FeLV and presenting clinical signs of the related disease.
No data are available in the studies to demonstrate protection against related clinical disease but prevention of infection is associated with protection against related clinical disease.
Onset of immunity: four weeks after the completion of the primary vaccination course.
Duration of immunity: one year after the primary course and three years after the booster.