Climate change has major health implications for developing countries but the links are often not well understood. This report describes the current and predicted climate impacts on human health in southern Africa. It presents a view of existing health vulnerabilities to climate change, identifies risks, assesses possible future socioeconomic conditions in relation to future health risks and identifies priorities for action. Climate change affects health in southern Africa principally through the quality and adequacy of water supply, food insecurity, infections organisms and vectors and extreme weather events, largely in that descending order of impact and significance.
The prevalence of HIV/Aids increases the vulnerabilities of individuals and communities. Low levels of progress against the Millennium Development Goals (MDGs), including poor infrastructure, leaves health systems in southern Africa highly vulnerable and unprepared for the challenges of climate change. Nevertheless, southern African Development Community (SADC) ministers of health and environment are recognising the threats and have adopted a leadership position committing to addressing climate change,
Evidence shows that the SADC region is experiencing increasing frequency of hot days and decreasing frequency of extremely cold days. Rainfall trends are variable but evidence points to an increased inter-annual variability, with extremely wet periods and more intense droughts in different countries. Projections show that changes will not be uniform over the region with the central, southern land mass extending over Botswana, parts of north western South Africa, Namibia and Zimbabwe being likely to experience the greatest warming of0.2°C to 0.5°C per decade. Frequency of extremely dry winters and springs will increase to roughly 20%, while the frequency of extremely wet summers will double.
Warming is also predicted to increase the frequency and intensity of tropical storms in the Indian Ocean.The region is vulnerable to the impact of climate change due to poverty, high pre-existing disease burden, fragmented health services,
In this paper the authors seek to identify the most appropriate model for a regional co-ordination mechanism for cholera preparedness, response and prevention. The qualitative mixed-method data collection approach that was followed revealed the need for alternative solutions, including a socio-political understanding of cholera responses at different levels of scale and at different stages of an outbreak.
Important areas that need to be understood include the multiplicity of actors and the complexity of their interaction, the importance of building local capacity, the need for varying responses at different levels of scale, the need for improved inter- and intra-country co-ordination and information exchange, the importance of cultural belief systems and the impact of the media on the response to cholera outbreaks.