多國流感個案近日激增,英國與日本在十二月同告出現H3N2變異株高峰,七項突變被指是今季暴走主因。
⚠Mutant H3N2 (clade K) Influenza hits epidemic levels in Spain 🇪🇸, UK 🇬🇧 , France 🇫🇷.
— Dr Richard Hirschson (@richardhirschs1) December 11, 2025
Thousands of schools have closed across the globe.
This is fast becoming the worst antigenic drift seasonal Flu in decades.
Get the jab. pic.twitter.com/r5pIKY3wfo
病例在英日同步飆升
BBC中文12日報道,英國本季流感數據急升,醫療機構錄得明顯早於往年的高峰;日本亦在同一時期出現擴散,加快各地入冬後的傳播節奏。報道指,H3N2其中一個毒株出現七個突變,令感染紀錄「迅速增加」,成為今季最突出變化。
#Flu in five charts - how this year's winter outbreak is different - BBC https://t.co/3pDyLrHQEf virologists have linked the earlier flu season this year to a subtle shift in the genetic makeup of the main flu virus that is circulating - called H3N2. So-called 'super-flu' is not…
— Dr. Aliya Shah (@aliya_Hshah) December 13, 2025
近年少見的版本 免疫力累積不足
根據報道,民眾近年較少接觸此變異版本,意味免疫力未充分累積。專家形容,相關變化在數年內罕見,推動今季各地爆發更早、更猛。流感病毒一般逐步演化,但今次突變幅度較大,擾動季節性預期。
In call with clinicians, CDC recommends flu vaccines widely
— CIDRAP (@CIDRAP) December 11, 2025
Both the CDC official and the WHO said preliminary UK data show that the current seasonal vaccine offers strong protection against subclade K.https://t.co/9sP08CNlY8 pic.twitter.com/YeNJHXlGZE
世界各大洲都已檢出 擴散速度快過往年
BBC指出,這個變異株在所有大洲已被檢測到,擴散速度明顯加快。英國劍橋大學病原體演化中心負責人史密斯教授提到,變異株的突變組合提升其傳播能力,屬今季需要特別留意的病毒走向。
⚠Mutant H3N2 influenza update US 🇺🇸:
— Dr Richard Hirschson (@richardhirschs1) December 12, 2025
Week 49:
8.1% tests positivity, 6884 admissions (6.6/100000), first paediatric death.
2,900,000 illnesses, 30,000 hospitalizations, and 1,200 deaths from flu so far this season.
These numbers have all doubled from week before.… pic.twitter.com/4YUWkfYXRa
多國踏入流感高峰 冬季疫情走勢仍未明朗
報道指,日本和英國已率先踏入流感高峰期,其餘地區冬季走勢仍待觀察。各地監測機構正持續比對病毒序列,以掌握變異株的後續發展。今季是否會再出現新突變,目前仍未有清晰結論。
H3N2流感變異株出現七個突變,令英國與日本等國病例急升並迅速擴散至全球。