AIDS has already orphaned more than 11 million African children, half of whom are between the ages of 10 and 14
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In these three countries [Botswana, Lesotho and Swaziland] and Zimbabwe, more than one in five children will be orphaned by 2010; more than 80 per cent of whom will have lost one or both parents due to AIDS
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Children whose parents have already died are disadvantaged in numerous and often devastating ways. In addition to the trauma of witnessing the sickness and death, they are likely to be poorer and less healthy than non-orphans. They are more likely to suffer damage to their cognitive and emotional development, to have less access to education, and to be subjected to the worst forms of child labour.And here is some more information from Avert.org
Emotional Impact
Total number of orphans due to AIDS, 2005 South Africa 1,200,000 Tanzania 1,100,000 Zimbabwe 1,100,000 Kenya 1,100,000 Uganda 1,000,000 Nigeria 930,000 Zambia 710,000 DR Congo 680,000 Malawi 550,000