3A; PASTEUR'S ANTHRAX VACCINE

Question 1

In the 1880s what didPadteur do with Koch’s work?

Answer 1

Pasteur used Koch’S WORK TO PROVE an anthrax vaccine could protect animals

Question 2

Explain Koch’s public demonstration of how the Anthrax vaccine worked?

Answer 2

He vaccinated 25 sheep with a WEAKENED STRAIN OF THE DISEASE

Then 2 weeks later he vaccinated both the vaccinated and vaccinated sheep with the FULL STRENGTHS BACTERIA

The vaccinated sheep lived whilst the other vaccinated sheep died

Question 3

How did Pasteur prove his rabies vaccine?

Answer 3

Despite his vaccine in the experimental phase

In 1885 he used his vaccine on JOSEPH MEISTER who had been bitten by a rabid dog,

Knowing the boy would die if he did nothing, Pasteur used his vaccine and it worked!

Question 4

How come Pasteur could use his vaccine to cure the boy if he was already infected?

Answer 4

Vaccines work as a form of prevention, but rabies does not develop until the microbes reach the brain