Improved vaccine against Leptospirosis

You may have heard your fellow dog walkers talking about a new vaccine for leptospirosis. There are several strains (known as serovars) of the leptospirosis bacteria which can cause disease in both dogs and humans. The symptoms vary with the strain but mainly affect the kidneys and liver. The bacteria are excreted in the urine of infected animals. One possible source of infection is contact with rats or water that has been contaminated with their urine. The standard vaccine provides protection against two strains but in recent years there has been an increase in two additional serovars in the UK and in dogs travelling to Europe. The new vaccine (Lepto 4) provides additional protection against these strains and requires a primary course of injections four weeks apart.