On May 7, 1847, the American Medical Association (AMA) was established in Philadelphia, Pennsylvania. Traveling from 28 states, 250 delegates set the goals and standards of the association, as well as to elect its first president (Dr. Nathaniel Chapman). The goals of the association included scientific advancement, the establishment of medical ethics, standards for medical education, and the improvement of public health.
 
The American Medical Association is still the leading medical organization in the U.S. The AMA continues to promote science, medicine, and the betterment of public health. Some of the ways the AMA has improved public health are its promotion of vaccinations, its study of the dispersal of diseases, and grants given for research.
ethics
Plural Noun

beliefs about what is right and wrong.

public health
Noun

services that protect the health of an area, particularly sanitation, immunization, and environmental safety.

research
Noun

scientific observations and investigation into a subject, usually following the scientific method: observation, hypothesis, prediction, experimentation, analysis, and conclusion.