1. Group 7: Germ Theory Tristan Roman, Joe Needham, Katie Carfagno

2. Overview Germ Theory Being Discussed: Ignaz Semellweis Louis Pasteur Robert Koch Joseph Lister Alexander Fleming

3. What is the Germ Theory? Lead scientists to conclude that infectious diseases were cause by microorganisms. Also known as germs.

4. What is the Germ Theory? The scientists work opened the doors to research into the identification of disease. Coming up with potential life-saving treatments.

5. Ignaz Semmelweis Was a physician. Work demonstrated a way that could drastically reduce the number of women's death after child birth By washing your hands.

6. Ignaz Semmelweis Ignaz figured out what the problem was. Introduced rigorous handwashing rules. Death after childbirth was drastically reduced. Became known as the "Savior of the Mothers"

7. Louis Pasteur Was not actually very smart during early years of school Took hard classes and pushed himself to get smarter Began the study of disease later in life

8. Louis Pasteur Invented pasteurization Suffered a back stroke and was paralyzed but continued research Created vaccinations for anthrax and rabies

9. Robert Koch Was a German physician Was a microbiologist Helped develop chemicals to fight bacteria

10. Robert Koch Helped build on Pasteur's work on the germ theory Proved that bacterium causes Anthrax Helped develop a way to stain bacteria

11. Joseph Lister Introduced new principles of cleanliness which transformed surgical practice in the late 1800's Did not discover new drugs Called the 'father of antiseptic surgery' because he discovered that there was a major lack of cleanliness in hospitals which made people more sick

12. Joseph Lister In 1865, he learned of Louis Pasteur's theory that microorganisms cause infection Using phenol as an antiseptic, he reduced the mortality rate in his ward to 15% within four years

13. Alexander Fleming known for discovering the enzyme lysozyme in 1923 also known for discovering the antibiotic substance benzyl penicillin (penicillin G) in 1928

14. Alexander Fleming Discovered the worlds first antibiotic bacteria killer Scottish biologist Discovered benzyl penicillin (an antibiotic)

15. Conclusion These men all had amazing ideas and changed the world significantly. They all had incredible contributions that made the world a better place Many lives were saved and many sicknesses were avoided because of the hard work that all of these men put in.