The History and Future of Vaccines

疫苗的歷史與未來

Jul 1, 2026, 11:09
GlobalHealth

Introduction

This report talks about vaccines in the USA. It explains how old vaccines worked and how new mRNA vaccines work.

本報告探討美國的疫苗情況。文中將解釋舊式疫苗的運作方式以及新型 mRNA 疫苗的運作原理。

Main Body

Doctors made vaccines a long time ago. These vaccines stopped many dangerous diseases. For example, the smallpox vaccine stopped a very bad virus. Later, doctors made vaccines for polio and the flu. These vaccines saved many children.

醫生在很久以前就研發了疫苗。這些疫苗阻止了許多危險的疾病。例如，天花疫苗阻止了一種非常兇險的病毒。隨後，醫生研發了脊髓灰質炎和流感疫苗。這些疫苗拯救了許多兒童。

Now we have mRNA vaccines. These vaccines give the body a set of instructions. They tell the body how to fight a virus. They do not change your DNA. Doctors say these vaccines are safe and they stop people from going to the hospital.

現在我們有了 mRNA 疫苗。這些疫苗為身體提供一套指令。它們告訴身體如何對抗病毒。它們不會改變你的 DNA。醫生表示這些疫苗是安全的，且能防止人們住院。

But some people do not trust vaccines now. They read wrong information on the internet. This is a problem. If people do not get vaccines, old diseases can come back. Now, scientists want to use mRNA to treat cancer.

但現在有些人不信任疫苗。他們在網路上閱讀了錯誤資訊。這是一個問題。如果人們不接種疫苗，舊疾可能會回歸。現在，科學家希望利用 mRNA 來治療癌症。

Conclusion

Vaccines are very important for health. We must trust science and improve the technology to stay safe.

疫苗對健康至關重要。我們必須信任科學並改良技術以確保安全。

Vocabulary Learning

💡 The 'Time Jump'

In this text, the writer moves from the Past to the Present. This is the best way to learn how to describe a change.

1. The Past (What happened) We use simple words to show things are finished:

  • Made (not make)
  • Stopped (not stop)
  • Saved (not save)

2. The Present (What is happening now) We use words for things that are true right now:

  • Have →\rightarrow "Now we have mRNA vaccines."
  • Are →\rightarrow "Vaccines are very important."

Quick Pattern: Past Word (ed) →\rightarrow Present Word Example: Stopped →\rightarrow Stop

🛠️ Action Words (Simple Verbs)

Look at how these words move a story forward:

  • Give (to provide)
  • Tell (to give information)
  • Fight (to stop something bad)
  • Trust (to believe)

Sentence Glue: If you want to connect an idea, use "But". Example: "Vaccines are safe. But some people do not trust them."

Vocabulary Learning

vaccine (n.)
A medicine that prevents a person from getting a disease.
Example:The doctor gave the child a vaccine to stay healthy.
disease (n.)
An illness or sickness in the body.
Example:The flu is a common disease in winter.
instructions (n.)
Information that tells you how to do something.
Example:Please read the instructions before you start the game.
trust (v.)
To believe that someone or something is honest or safe.
Example:I trust my doctor to give me the right medicine.
improve (v.)
To make something better than it was before.
Example:I want to improve my English by reading every day.
technology (n.)
New machines or ways of doing things using science.
Example:Modern technology makes it easy to talk to people far away.
Practice A2 words in a crossword→