灭活病毒疫苗没有此种副作用，要提供保护则需要多剂量，但在流行地区这可能证明是难以解决的。
The vaccine does not contain aluminium stearate, can keep high antibody producing capacity for a long time and solve the problem of animal stress caused by vaccine injection and vaccine residue.该疫苗不含硬脂酸铝，能在较长时间内保持较高的抗体产生能力，并解决注射疫苗引起的动物的应激反应以及疫苗残留问题。
Clearly, not all these criteria need to be present, and neither does each carry equal weight for a causal relationship between an adverse event and the vaccine to be determined.很显然，并非所有上述标准都必须满足，在确定副反应与疫苗之间的因果关系时，每一个标准的权重也不同。
