The molecular based tests used to detect SARS-CoV-2 are very specific but can take two to three days to process and produce a result.
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The notion that there is a binary choice between the economy and the medically optimal strategy is wrong.
Already, we have seen a range of responses globally - from countries that apparently reacted too late, to those who acted relatively early.
Very little is known about the relationship between COVID-19 and HIV and TB. What is known is that people's lungs are affected by all three.
Scientists need greater understanding of the bacterium's basic biology, as well as more about how it is spread from one individual to the next.
Social distancing is impossible in much of Africa, and its economic consequences may lead to a famine that is worse than the pandemic. Prevention measures must consider the African context.
It's been 60 years since the massacre of 69 unarmed civilians by the South African apartheid state. Here's how the killings changed the way the world thinks about human rights.
Reactions in South Africa give little reason for hope that the virus will bring people closer together or trigger more energetic action against poverty.
Group B streptococcus is the most common bacterial cause of illness in newborn babies around the world.
Usually when a leader handles a crisis poorly, it's politically costly. But President Trump's mishandling of the coronavirus crisis is not likely to hurt him, says an expert on health crises.
The findings suggest that this specimen could climb and move in trees. But it may also have been able to walk on the ground. This echoes previous studies.
The school playground is not just a place to have fun. It's an important space to claim power and this is often done through violence.
New insights show that South Africa's education system is heading in the right direction.
The Spanish flu episode highlights some elementary mistakes made back then which must be avoided at all costs to prevent another public health disaster.
Fewer books will be available to South Africans, and the books remaining under copyright will be more expensive, if the country gives in to US pressure to extend its copyright term.
In some communities, over a quarter of the children were misclassified as iron replete whereas they were iron deficient.
The health and rights of children and adolescents, particularly the most marginalised and vulnerable, are under immediate threat from climate change, corporate actors and growing inequities.
Policies need to address human develop challenges, if people are to be equitably brought on line.
If patients received counselling from someone who spoke their language, they would have an opportunity to ask questions about their medical condition and understand it more clearly.
Art and visual culture played a significant role in building a unified Afrikaner nationalism that allowed apartheid to thrive. A new book unpacks the issue.
Les contributeurs les plus fréquents
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Professor of World Politics, SOAS, University of London
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Head of School of Economic & Business Sciences, University of the Witwatersrand
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Professor of Political Studies, University of Johannesburg
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Senior Lecturer in Economics, Research Associate at the Public and Environmental Economics Research Centre (PEERC) and Visiting Fellow at the Johannesburg Institute of Advanced Study (JIAS), University of Johannesburg
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Professor of Political Economy, University of the Witwatersrand
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Associate professor, University of Cape Town
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Political Scientist, University of the Western Cape
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Head: Wits School of Governance (Designate), University of the Witwatersrand
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Associate Professor in Public Law, University of Cape Town
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Lecturer of Finance, Graduate School of Business (GSB), University of Cape Town
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Professor of Sociology, University of the Witwatersrand
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SARCHI Professor of International Development Law and African Economic Relations, University of Pretoria
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Science Communication Researcher, Stellenbosch University
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Extraordinary Professor, Department of Political Sciences, University of Pretoria
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Professor and Director of The Nelson Mandela School of Public Governance, University of Cape Town
