The different types of COVID-19 tests are far from equal. Picking a test is generally a matter of speed versus accuracy and, most importantly, why you need a test and when. What are the limitations of these tests? Is there any quality control? What are the chances of false positives and false negatives? Elsabé Brits surveys the landscape of tests available in South Africa and asks which type is most appropriate in what situation.
Early enthusiasm about South Africa’s strong position to scale up COVID-19 testing due to existing investments in diagnostic infrastructure for HIV and TB waned after the country found itself unable to secure adequate test materials. Steps are now being taken to reduce the dependence on just a few suppliers for these materials. Catherine Tomlinson reports.