What is epidemiology?

Epidemiology is more of a human health study in populations than in individuals. It studies the causes of the disease, as the specific diseases and disease control are spread. Epidemiology is literally a study of an epidemic.

Epidemiology first became a problem where human populations began to gather in cities. Without any form of basic epidemiology, control of the outbreaks of infectious diseases would be impossible. Simple quarantine may contain some diseases that are transmitted from person to humans, but to stop the spread of diseases whose cause is not so obvious is necessary sophistication.

Epidemiology uses a wide range of scientific instruments, from medicine and statistics to sociology and anthropology. Many diseases monitor the flow of the population, so understanding how the migrants' population moves with seasons is crucial for understanding the spread of a particular disease in this population.Lears to trace back to a specific contaminated water source, for example, the disease can be effectively stopped by turning off access to this water source.

Sometimes the cause of a particular health problem can only be statistically listed - here the epidemiology has the most difficult case. The fact that smoking is a factor in a number of health problems has so far been proven only statistically in large population studies. The individual case of lung cancer cannot be shown that it was caused by smoking, which unfortunately gives some intellectual twisted space to those who decide not to believe that smoking is unhealthy.

Many health problems caused by environmental factors are solved only through epidemiology. The tip of cancer near the source of pollution, for example, cannot be seen when looking at individual cases, but only when looking at the statistics for the whole area. Epidemiology is the main weapon in the area inEarth's health and epidemiologists are often our first and last defense.