Inwestycje wodne a rozprzestrzenianie się chorób pasożytniczych w regionach międzyzwrotnikowych Afryki i Azji

• Autorzy: Lecka I.

Warianty tytułu

EN

Watern born deseases and river dams in Asia and Africa

• Języki publikacji: PL

Abstrakty

EN

In the literature there is a clash of views and opinions concerning water projects and their effects on environment and man. That induced myself to penetrate this changes, which appears in the zone of influence of water projects. So the subject of this study is one of the most controversial side effects of water projects - spread of water born diseases. Both sides (proponents and opponents of water construction) most often make use of their own statistical data, which are frequently divergent and their mention their own examples. In such circumstances it start to be very interesting for me to investigate influence of water projects built in Africa and Asia on spread of tropical diseases like: schistosomiasis, malaria, filariasis with onchocerciasis. All of this sickness are the most widespread and danger in tropical zone. Differentiation's of environmental and social conditions affect possibilities of water-born prevalence. There are several factors that might modify process and tempo of sick rate. So in order to take into consideration most of this modifying elements I choose to investigate such factors like: - type of hot climate, where water projects are localized - environmental attributes like, in example chemistry of water, temperature of air and water etc., which may affects existence of vector of diseases; - hygienic habits and cultural practices (particularly division of labor); - migration. In this study are annalist more than 30 water projects in many African and Asian countries (most of them African). Results are like follows: 1. Construction of water projects might be conducive to spread of water born diseases but it's not obligatory. 2. Very rarely dam construction can introduce the disease for a first time on the water investment area. 3. Presence of the disease vector doesn't necessary be connected with the presence of the disease. 4. Type of hot climates ( dry or wet) affects prevalence of malaria only. 5. Schistosomiasis and malaria starts to be a bigger problem around large water projects and old than small and relatively new. In huge and large dams area people can suffer from few water-born diseases at the same time. 6. Cultural customs and habits play a visible role in cases of schistosomiasis, malaria, filariasis: Bancrofti and malayi (not in case of onchocerciasis). 7. In spreading process of water-born diseases, hygienic habits are not so much important as are usually mention in literature. What' s more optimistic they are quite easy to change if people really wish to fight with such problems? 8. Labor division has impact on sick rate only in cases of schistosomiasis and malaria. 9. Migration is a very modifying factor that can affect prevalence of all examined diseases and is very hard to control.

• Wydawca: -
• Czasopismo: Prace i Studia Geograficzne
• Rocznik: 1999
• Tom: 25
• Opis fizyczny: s.47-60,map.,bibliogr.

Twórcy

autor

Lecka I.

Bibliografia

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