Weijia 5 and Weijia 8 are generally not recommended for mixed use because they cannot achieve satisfactory preventive effects. Since Wei Jiawu and Wei Jiaba prevent different types of diseases, mixed vaccination will affect the immune effect of the vaccine.

The biggest difference between Wei Jiawu and Wei Jiaba is that the latter can prevent zoonotic diseases such as leptospirosis. If the dog lives in an epidemic area, it is generally recommended to vaccinate Wei Jiaba. Finally, dogs should be vaccinated in their first year of age at least forty-two days of age.