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The ravages of HIV / AIDS have had a catastrophiceffect on life expectancy in sub-Saharan Africa. Swaziland has the world’slowest life expectancy at 39.6 years according to the UN’sworld population report and is joined at the lower reaches of the table byMozambique, Zambia and Sierra Leone. But even Swaziland’s tragic figures aresignificantly higher than Manchester, Lancashire in the first half of the 19thcentury.