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Epidemiology Epidemiology is the study of occurrence, spread and the quantification of the mechanism that underlies the disease to the healthy population. The epidemiological studies help the practitioners to find out the root cause of the disease and develop the treatment methods accordingly.
(Friis and Sellers, 2009). Epidemiological activity is used since many decades. The statistical tools are the most powerful device used for identifying the risk factors and the relationship between various factors such as environmental factors, drugs, genetics, hormones, occupation, nutrition and viruses, bacteria. It was the epidemiological studies that revealed the relationship between Human Papilloma Virus (HPV) and cervical cancer. (Friis and Sellers, 2009). The US centre for Disease Control and Prevention [CDC] estimates that most of the new cases of HPV are teens and young adults. They have estimated that 6 million new cases are recorded every year in US. In 2007, the CDC has announced that one among the four teenage girls ages 13 to 19 are having HPV. Among the teens, 40 percent of the children who had sex were found to have Human papilloma virus. (Lyon and Antoniades, 2009). Similarly CDC has also found that 20 Americans are infected with the HPV and many of them are not aware of it. Uses of Epidemiology 1. To study the history of the disease and the changes in the disease states. It also helps to study the history of the healthy populations in the locality. 2. To measure the true dimension of the disease and the healthy individuals. The prevalence of the disease based on the risk factors, the distribution of disability and mortality can be understood using epidemiological studies. 3. ...
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