Communicable Disease

What is Epidemiology
Epidemiology is considered the science of public health. It is the study of the distribution and causation of diseases and health-related conditions within specific populations.

Epidemiology is based on the assumptions that:

  • Human disease does not occur at random.

  • Factors that cause disease can be identified.

Those who work at public health are aware of the need for analyzing causation, monitoring statistics in a regional area of disease outbreaks, and looking at the probability of an outbreak.

Epidemiology is concerned with the frequency and pattern of health events in a population. They are also looking for causes of health related events.  Frequency includes not only the number of such events in a population, but also the rate or risk of disease in the population.

The rate (number of events divided by size of the population) is critical to epidemiologists because it allows comparisons across different regions, and different populations.

They look at Time, Place, and Person. By analyzing the data they can determine the outcome.

The other type of epidemiologist, the research epidemiologist, works in medical schools and government agencies. 

Public Health employs Research epidemiologists to look into health concerns. 

They study infectious diseases and the things in the environment that leads to their spread. 

Things like chemicals in water or second-hand smoke are studies to see how they affect the spread of illnesses.

They must have also taken various courses pertaining to bio statistics. So you have to complete a lot of educational work if you want to work as an epidemiologist.