When we rescued our two they had their flu and enteritis jabs done in September 2012, We got their leukaemia done in January 2013. When should I get their boosters done? I phoned the vets to double check they first said said January, then said ASAP when i told them they had their flu &ent jab in September 2012. But when we got their leukaemia jab the vet said October! I am a little confused and worried if I get them done too early it could cause them harm.