Trypanosomiasis in Ngamiland: An Ethnoparasitological Investigation

Autor:	H. J. Heinz
Rok vydání:	1968
Předmět:	Geography Marsh geography.geographical_feature_category Vector (epidemiology) Geography Planning and Development medicine General Earth and Planetary Sciences Ethnology African trypanosomiasis medicine.disease Trypanosomiasis Historical record
Zdroj:	South African Geographical Journal. 50:93-100
ISSN:	2151-2418 0373-6245
DOI:	10.1080/03736245.1968.10559436
Popis:	The history of trypanosomiasis in Ngamiland is reconstructed from an ethnological as well as a parasitological approach. The past distribution of this disease is examined both from the point of view of the vector as well as the parasite. The premise is offered that trypanosomiasis has not always enjoyed a wide distribution in and around the Delta of the Okovango river and indeed that there has been a periodic advance and retreat. Evidence of this is the historical records of the people. Though some writers argue that human in contrast to veterinary trypanosomiasis did not enter the area until the turn of the century, there is evidence that rumours of “kotsela” (drowsiness) have emanated from certain parts of the swamps long before this. It is suggested that fly-spread and the subsequent increase in sleeping sickness followed to some extent periods of increased rainfall which altered the vegetation in favour of tsetse flies.
Databáze:	OpenAIRE
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