• Covid Quiz
     Help
  • Is there a vaccine against covid? 是否有Covid-19的疫苗？
    Yes 有
  • How to protect yourself from getting infected? 如何避免感染病毒？
    Wear a mask 戴口罩
  • How do vaccines work? 疫苗如何运作？
    Memory Cells 记忆单元
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