A blizzard of misinformation about leptospirosis is putting animals and human health at risk Leptospirosis is an infectious disease caused by bacteria of the genus Leptospira . It is recognised as an important disease in dogs due to its potential to cause severe illness and its ability to spread to humans. In the United Kingdom, leptospirosis vaccination is classified by the British Small Animal Veterinary Association (BSAVA) as a core vaccine . Core vaccines are those recomm