HISTORY OF MEDICINE

7000 BC SPIRITS

• Ancient societies drill holes in people's head to release evil spirits believed to cause disease.

460-377 BC HUMORS

• Hippocrates was a Greek physician.
• He hypothesized that fluids called humors cause disease.

1330-1352 AD HERBAL TREATMENTS

• The Black Death was caused by bacteria transmitted by rats fleas.
• People used incense to try to cure it.

1400-1600 ANATOMY

• People begin to study anatomy.

1857 GERM THEORY

• Louis Pasteur hypothesizes that disease is caused by small "animals"

1865 ANTISEPTIC TECHNIQUE

• Joseph lister finds out that cleaning his surgical tools reduces patients infections.

1883 KOCH'S POSTULATES

• Robert Koch finds four conditions that prove a pathogen causes a disease.

1900s APPLYING ANTISEPTIC TECHNIQUE

• Many cities start treating drinking water with chlorine.
• This is to reduce cases of cholera.

1928

• Sir Alexander Fleming discovers penicillin.

1955 POLIO VACCINE

• Jonas Salk's vaccine against polio becomes available.
• The disease is eliminated in the U.S. in 1994.

2002 NEW DISEASES

• First case of SARS spring up in China.
• SARS affects the respiratory system.

2005 POLIO COMEBACK

• Worldwide efforts increase to vaccinate people against polio.
• Polio reemerges in fewer than ten people in the U.S.