littlebirdd987
littlebirdd987
25.02.2021 • 
English

Can anyone help me In 1776, Edward Jenner started the war against smallpox. The war continued until 1977, when the World Health Organization declared the world free of smallpox. This is a good example of .

how the contributions of one individual can change the world of medicine
how preventative medicine can help overcome disease
how medical research can solve problems
all of the above

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