The day of a successful vaccination – level 3
Smallpox was a deadly and highly infectious disease that had killed millions of people.
Edward Jenner was a country doctor who observed that milkmaids who had contracted cowpox, a much milder disease, seemed to be immune to smallpox.
On May 14, 1796, Jenner took material from a cowpox blister on the hand of a milkmaid and injected it into the arm of an 8-year-old boy.
The boy developed a mild fever and some discomfort, but he did not get seriously ill. He also became immune to smallpox.
The success of Jenner’s vaccine led to the widespread use of vaccination as a means of preventing smallpox.
The term “vaccine” comes from the Latin word for cow, “vacca,” because Jenner used cowpox to create the smallpox vaccine.
What other diseases have been prevented or eradicated through the use of vaccines?
LEARN 3000 WORDS with DAYS IN LEVELS
Days in Levels is designed to teach you 3000 words in English. Please follow the instructions
How to improve your English with Days in Levels:
- Do the test at Test Languages.
- Go to your level. Go to Level 1 if you know 1-1000 words. Go to Level 2 if you know 1000-2000 words. Go to Level 3 if you know 2000-3000 words.
- Read two new articles article at Days in Levels every day.
- Read one previous article too and check if you remember all new words.
- Listen to the new article and read the text at the same time.
- Listen to the new article without reading the text.
- Answer the question under the new article and write your answer in the comments.