Are L2 and L4 Compatible?

L2 and L4 are not compatible. Therefore, puppies that have had their first vaccine with L4 will require and additional vaccine on L2.

Is L2 better than L4?

Summary. The L4 vaccine provides more comprehensive protection against Lepto than the L2 vaccine.

What is the difference between lepto 2 and 4?

For this reason, we need to update our vaccines to provide dogs with the best protection we can. The “Lepto 2” vaccines we have used up until now cover your dog against the 2 families we have known about for a while. The new “Lepto 4” vaccines provide protection against all 4 families that we now know about.