vaccine

vaccine — 名詞

1. A medical preparation designed to protect humans or animals from catching a spec

1.名詞C2
釋義

疫苗

預防特定疾病的注射用生物製劑

A medical preparation designed to protect humans or animals from catching a specific illness. It uses a harmless version of the germ, teaching the body's defences to spot and eliminate the real germ if it enters the body later on.

例句

The nurse gave Nora a vaccine against measles before she started primary school.

護士在 Nora 上小學前，給她打了一劑麻疹疫苗。

collocation: vaccine against [disease]

Doctors recommend that older adults get a flu vaccine every autumn to stay healthy.

醫師建議年長者每年秋天接種流感疫苗，以維持健康。

collocation: get a [disease] vaccine

同義詞
  • immunisation

    Refers to the entire process of becoming immune, not the substance itself; broader in meaning.

  • inoculation

    Older, more technical term; often implies a scratch or puncture rather than a standard injection.

  • shot

    Informal and mainly US; refers to the injection itself rather than the medical preparation.

  • jab

    Informal and mainly British; common in everyday speech and news headlines.

用法筆記

Usually followed by 'against' or 'for' to name the target disease (e.g., a vaccine against rabies / a vaccine for measles). Used as both a countable noun ('two different vaccines') and an uncountable noun ('enough vaccine for everyone'). Most vaccines are injected, but some are given orally or as a nasal spray.

常見錯誤

❌I need a vaccine of flu.
✅I need a vaccine for flu.
💡Use 'for' or 'against' after 'vaccine', not 'of.'
❌The vaccine prevent disease.
✅The vaccine prevents disease.
💡'Vaccine' is a noun; use 'vaccinate' (verb) or 'vaccination' (noun) for the action: 'The vaccination prevents disease.'