老年人免疫機能衰老,普通劑量,流感抗體消失快,約3~4月(記不清楚,懶得查了)。高劑量,抗體維持時間長,涵蓋流行期。
老年人免疫機能衰老,普通劑量,流感抗體消失快,約3~4月(記不清楚,懶得查了)。高劑量,抗體維持時間長,涵蓋流行期。
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