Leptospirosis can cause:
Bovine leptospirosis is a highly infectious bacterial disease and is widespread in Ireland with over 70%1 of dairy herds infected and approximately 80%2 of beef herds infected.
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Abortion
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Poor conception
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Milk drop
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Poor calf performance
Leptospirosis is a danger to humans and is an occupational hazard.
Leptospirosis is best controlled by vaccination to both reduce shedding from carrier animals AND to decrease the number of carriers in the herd.
Spirovac® is licensed to provide protection against LHardjo borgpetersenii. Cross reactivity has also been demonstrated at a serological level to LHardjo interrogans.
Product information
Spirovac® is licensed to provide protection against L.Hardjo borgpetersenii. Cross reactivity has also been demonstrated at a serological level to LHardjo interrogans.
Dosage: 2ml
Vial sizes: 5 & 25 doses
Administration: Subcutaneous injection (preferably in the neck)
Vaccination scheme:

Legal category: LM
Withdrawal: Zero days.
Summary of Product Characteristics: Full product licence here
References
1Leonard N, et al. Prevalence of antibodies to Leptospira interrogans serovar hardjo in bulk tank milk from unvaccinated Irish dairy herds. Irish Veterinary Journal. 2004;57:226–231.
2Ryan et al.: Seroprevalence of Leptospira Hardjo in the Irish suckler cattle population. Irish Veterinary Journal 2012 65:8.
Spirovac®: Inactivated Leptospira borgpetersenii serovar Hardjo. Legal Category- ROI: LM, NI: POM-VPS. Prescription decisions are for the person issuing the prescription alone. Further information, see the product insert or SPC, or contact Zoetis, 2nd Floor, Building 10, Cherrywood Business Park, Loughlinstown, Co. Dublin D18 T3Y1. (01) 2569800 | www.zoetis.ie. Use medicines responsibly (www.apha.ie) (www.noah.co.uk). June 2026.MM-49621