The relationship between the disease and location is not a
new concept if we look in the history of epidemiology since in the ancient
Greek era, Hippocrates (5th-4th centuries BC) was aware and recognized the
effect of location on one’s health. Early physicians found that the people
living at high and low
elevation experienced differences in diseaseshttp://www.omicsgroup.org/journals/spatial-patterns-of-hepatitis-c-disease-in-ghadezai-tehsil-district-bunerkhyber-paktunkhwa-pakistan-2167-0587-1000146.pdf. The earlier spatial and
temporal studies of this virus suggested that the spread of this virus started
in the early twentieth century and potentially increased a lot up to 1980.
According to the WHO’s epidemiological data, the prevalence of HCV is less than
1% in northern Europe, Canada, Australia and USA.
While in different regions of Latin America, Central Asia,
South East Asia and Africa the HCV prevalence rate is more than 2% and the prevalence
of this disease is reported between 5 to 10% [1] The world epidemiological data
suggested that about 130 to 180 million people that make 2 to 3% of the entire
world population are victim of HCV and more than 4 million people are
chronically infected by HCV in Oceania, 16 million in the Arabian countries and
Middle East region. The infections are high as 83 million in the continent
Asia. The infection caused by HCV in Africa is 28 million and America and
Europe have 16 and 17.5 million respectively.

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