一位 65 歲的病人詢問護理師關於流感疫苗接種的頻率。護理師的哪項回答是正確的?
A 65-year-old client asks the nurse about the frequency of influenza vaccinations. Which response by the nurse is correct?
- AInfluenza vaccines are only necessary if there is an active outbreak in your area僅在當地有活躍疫情爆發時才需要流感疫苗
- BYou only need a flu shot every 5 years after the age of 6565 歲以後每 5 年只需接種一次流感疫苗
- COnce you have had the flu, you are immune and no longer need the vaccine一旦感染過流感,您就具有免疫力,不再需要疫苗
- DA flu shot is recommended once every year, usually in the fall✓ 正解建議每年接種一次流感疫苗,通常在秋季
流感疫苗的接種是老年人預防疾病與促進健康的重要環節。由於流感病毒株每年都在變異(抗原漂移),且疫苗誘導的免疫力會隨時間下降,因此無論年齡大小,臨床建議均為「每年接種一次」。對於 65 歲以上老人,由於其免疫系統較弱,感染後併發肺炎或心血管事件的風險極高,更應落實每年秋季接種。選項 B 混淆了肺炎鏈球菌疫苗(某些類別需間隔 5 年);選項 A 錯誤,因為疫苗是預防性措施,應在流行期前接種而非爆發後;選項 C 錯誤,因為得過某種流感並不代表對其他變異株有終身免疫。臨床思路上,護理師應強調「病毒變異」與「群體免疫」的概念。
The influenza vaccine is recommended annually, typically in the fall, because the virus mutates frequently and immunity wanes over time. Previous infection or vaccination does not guarantee protection against new strains, making yearly updates essential for prevention.
在美國,65 歲以上老人常被建議接種「高劑量流感疫苗」(High-Dose Flu Shot),因為其抗原含量是普通疫苗的四倍,保護效果更好。台灣目前公費流感疫苗則以提供全球統一標準的四價疫苗為主,護理師需了解不同產品對老年的保護力差異。