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Is there a better andrology hospital in Longquanyi?
There are many better ones, such as Chengdu Shuguang, which doesn't cost much anyway.

Immune dose is insufficient. In order to prevent canine distemper, some dog owners bought puppies from mature families, thinking that this is very sure, but some dogs have canine distemper. The author thinks that the insufficient dose of the first immunization is the main cause of canine distemper after the first immunization. Because of insufficient dose, most vaccines were neutralized by maternal antibodies, and the first immunization did not work.