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流感疫苗  - 四價流感疫苗
Influenza Vaccine (Quadrivalent Influenza vaccine) Influenza

流行性感冒(簡稱流感)是一種由流感病毒引致的急性呼吸道疾病。

流感可由多種類型的流感病毒引起，而本港最常見的是 H1N1 及 H3N2 兩種甲型流感和乙型流感。香港的流感一般在 1 月至 3 月及 7 月至 8 月較為常見，病毒主要透過由患者咳嗽、打噴嚏或說話時產生的飛沫傳播，亦可透過直接接觸患者的分泌物而傳播。流感病情一般較嚴重，病徵有發燒、肌肉疼痛、咳嗽、頭痛、喉嚨痛及流鼻水等，免疫力較低人士，如幼童、長期病患者或長者一旦染上流感，可出現支氣管炎、腦膜炎或肺炎等併發症，嚴重者甚至可死亡。

Influenza is an infectious viral disease. It can be caused by various types of influenza viruses. In Hong Kong, the two subtypes of influenza A virus, H1N1 and H3N2, and influenza B virus, are most commonly seen. Influenza occurs in Hong Kong throughout the year, but is usually more common in
periods from January to March and from July to August. The viruses mainly spread through droplets when infected people cough, sneeze or talk. The infection may also spread by direct contact with the
secretions of infected persons. The disease is characterised by fever, sore throat, cough, headache, muscle aches, runny nose and general tiredness. However, if persons with weakened immunity and
elderly persons get infected, it can be a serious illness and may be complicated by bronchitis, pneumonia or even death in the most serious cases.

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