| Discovery | Discoverer |
|---|---|
| Penicillin | Alexander Fleming |
| Malaria Parasite | Ronald Ross |
| Circulation of blood | William Harvey |
| Chloroform | Simpson and Harrison |
| HIV Virus | Luc Montagnia and Rober Gallo |
| X-Rays | Wilhelm Roentgen |
| DNA | James Watson and Francis Crick |
| Insulin | Frederick Banting and Charles H Best |
Discovery of Vaccines
| Vaccine | Discoverer |
| Small Pox | Edward Jenner |
| Rabies | Louis Pasteur |
| Influenza | Thomas Francis Jr. |
| Measles | Maurice Hillman |
| Mumps | Maurice Hillman |
| Chicken Pox | Maurice Hillman |
| Meningitis | Maurice Hillman |
| Hepatitis A and Hepatitis B | Maurice Hillman |
| Pneumonia | Maurice Hillman |
| Rotavirus | Paul Offit |
| Rubella | Stanley Plotkin |
| Polio | Jonas Salk |
Discovery of Vitamins
| Vitamin | Discoverer |
| Vitamin A | Elmer V McCollum and Marguerite Davis |
| Vitamin B1 (Thiamin) | Casimir Funk |
| Vitamin B2 (Riboflavin) | DT Smith and EG Hendrick |
| Vitamin B3 (Niacin) | Conrad Elvehje |
| Vitamin B6 (Pyridoxine) | Paul Gyorgy |
| Vitamin B7 (Biotin) | Paul Gyorgy |
| Vitamin B9 (Folate) | Lucy Wills |
| Vitamin C | A. Hoist and T. Froelich |
| Vitamin D | Edward Mellanby |
| Vitamin E | Katherine Bishop and Herbert Evans |