Spirovac - 10ml

For active immunisation of cattle to prevent kidney colonisation and shedding of Leptospira borgpetersenii serovar Hardjo in urine. A 3 week onset of immunity and 12 month duration of protection has been demonstrated by challenge with Leptospira borgpetersenii serovar Hardjo. For active immunisation of cattle persistently infected with Leptospira borgpetersenii serovar Hardjo. Vaccination reduces urinary shedding of Leptospira borgpetersenii serovar Hardjo without clearance of renal colonisation. This effect appears 4 weeks post vaccination and its duration is unknown. The epidemiological significance of the reduced shedding has not been demonstrated. The vaccination may not prevent abortion in cows in which placental infection has already occurred. Dosage & Administration • Dose 2 ml • Administration By subcutaneous injection, preferably in the neck. • Shake the container well before withdrawing the dose. Basic vaccination scheme • 2 doses of vaccine separated by a 4 to 6 week interval. • Calves as young as 4 weeks of age may be vaccinated. Revaccination scheme • A single 2 ml dose on an annual basis. Withdrawals Zero days. Vaccinated cattle may be positive for diagnostic tests for leptospirosis and therefore unacceptable for export to some countries.