Tuesday, March 30, 2010

Distribution of Infectious Diseases Worldwide by Xian Cheung







Map #1: Distribution of AIDS Worldwide
Comments: This map was found posted on Mapsorama.com. The map presents the distribution and number of the unfortunate people that live with AIDS or HIV in 2008. Many scientists theorize that the HIV virus originated in Africa, thus it is no surprised that many people of Southern Africa are plagued with the disease. India is also plagued due to its overpopulation and closeness to Africa. What is interesting about the map above is that America has over 1 million individuals living with AIDS. America being a developed and wealthy country failed in containing and controlling the disease. AIDS is indeed a devastating disease.


Map #2: Distribution of TB Worldwide
Comments: The map was found on the World Health Organization (WHO) website and presents the distribution of new cases of Tuberculosis(TB) in 2007. Contrary to what was presented in the previous AIDS distribution map, this map shows that developed countries have fortunately contained the disease thanks to advanced technology and medication. Countries like those in Africa are rather unfortunate due to lack of wealth and good health care. China being a overpopulated and developing country has managed to contain and control the disease. What is interesting is that North Korea has over 300 new cases of TB, while majority of the countries surrounding it like that of China have less than 100 cases.

Map #3: Distribution of Malaria Worldwide
Comments: The map was found in an article on the Earth Institute of Columbia University website. The map presents the distribution of malaria-infected individuals worldwide. The map shows that malaria is most frequent in central Africa and countries far away from central Africa escape infection of malaria. What is particularly interesting is that northern African countries such as Egypt also escape infection. The number of infections do not gradually decrease as you move north, but instead it abruptly disappears once you cross about 15 degrees N latitude. This phenomenon is worthy of investigating.

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