Researchers tried several times to have the document declassified, including in 1992, 2004 and 2016. It was initially written to help American NSA agents crack difficult coded messages.
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Computer capabilities have boosted our decryption technology to great heights. How will the future compare to a past, one in which codes were thought to be a means of communicating after death?
The first global comparison of adolescents that acquired HIV as newborns highlights the challenges around treatment.
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Research Fellow, School of Information Technology and Electrical Engineering, The University of Queensland
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Associate Professor and Director of the Centre for Infectious Diseases Epidemiology and Research, University of Cape Town
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Senior lecturer in Paediatrics and Child Health, Stellenbosch University