Malaria in Limpopo Province of South Africa is shifting and now observed in originally non-malaria districts and it is unclear whether climate change drives this shift. This study examines the distribution of malaria at district level in the province; determines direction and strength of the linear relationship and causality between malaria with the meteorological variables (rainfall and temperature) and ascertains their short and long run variations. Spatio-temporal method, Correlation analysis and econometric methods are applied. Time series monthly meteorological data (1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007) were obtained from South Africa Weather Services while clinical malaria data came from Malaria Control Centre in Tzaneen (Limpopo Province) and South African Department of Health. We find that malaria changes and pressures vary in different districts with a strong positive correlation between temperature with malaria, r = 0.5212, and a weak positive relationship for rainfall, r= 0.2810. Strong unidirectional causality runs from rainfall and temperature to malaria cases (and not vice versa): F (1, 117) = 3.89, and a bi-directional causality exists between rainfall and temperature and temperature to rainfall and from rainfall to temperature, F (1, 117) = 19.80; F (1,117) = 17.14 with 001 . 0 respectively in both cases. Results show evidence of strong existence of a long-run relationship between climate variables and malaria, with temperature maintaining very high level of significance than rainfall. Temperature, therefore, is more important in influencing malaria transmission in Limpopo Province.
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