Final answer:
The 5-way lepto vaccine includes the serovars Canicola, Icterohaemorrhagiae, Pomona, Hardjo, and Grippotyphosa, which protect against leptospirosis.
Step-by-step explanation:
The serovars in the 5-way lepto vaccine are Canicola, Icterohaemorrhagiae, Pomona, Hardjo, Grippotyphosa. This combination aims to protect against different strains of Leptospira bacteria, which can cause leptospirosis, a disease affecting various animals, including dogs. Leptospirosis can lead to severe health problems and can also be transmitted to humans, making vaccination an important preventative measure.