Answer:
No, dipping letters in vinegar was a gooc conclusion to preven the spread of the yellow fever.
The sentences are in the explanation as this space is used to the statement.
Step-by-step explanation:
The four sentences are the following:
Yellow fever is a viral condition that does not travel outside the body of a mosquito.
The yellow fever virus was not in the environment and couldn't infect the subject without entering the body directly from a fluid.
The letters shouldn't have had to be dipped in vinegar because the virus was harmless in the letter as it would most likely die in the time the letter would take to reach the destination.
The yellow fever is a disease that didn't require more than preventing a mosquito's bite to be avoided.