The Olive Leaf Foundation has registered more than 430 children since June last year. It provides food parcels, school uniforms and school fees, Aids prevention programmes and bereavement counselling for 810 orphans in the village.
The organisation believes there are up to three times that number of orphans in the village and surrounding area because it has not finished an investigation of schools in the district.
On the eve of World Aids Day, villagers spoke of how most of the graves in Qunu, a settlement of people living in round huts in rolling green hills, are of those who died from the virus.
In almost every fenced-in homestead stands one or more tombstones, most bearing the names and ages of people between the ages of 20 and 40.
The pandemic has sown despair and fear among the villagers, locked in desperate lives in ramshackle mud brick homes.
Olive Leaf Foundation's Mthatha manager, Thandie Matikinca, said the organisation also helps about 30 HIV-positive adults in Qunu.
The Sunday Times reported this week that HIV/Aids had gripped Qunu, where seven people die every month.
But health activists and nurses at Qunu Clinic, which was opened by Mandela in 2001, said the figure could treble if families were "honest and disclosed" the cause of death of their members.
Adelaide Madyibi, principal of No Moscow Senior Secondary School, described the pandemic in the village as a "crisis".
She has made pupils wear beaded Aids awareness ribbons at school, introduced compulsory weekly Aids-awareness classes, and instructed children to write poems about the virus, which they recite for classmates.
She has created a vegetable garden that provides meals for the 57 pupils.
All the pupils in the school work in shifts in the garden, twice a week.
Statistics released by the Eastern Cape health department this week showed that 730000 people - about 11% of the province's population - and one in five adults are believed to be HIV-positive.
Nurses at Qunu Clinic, which reports an average of 18 new HIV-positive patients a month, said the number of people on antiretroviral drugs increased from 23 in August to about 30 last month.
They say that increasing numbers of high school pupils visit the clinic daily for Aids tests and treatment for sexually transmitted diseases.
Aids activist Nozuko Mbokodi, 37, who discovered that she was HIV-positive after a life-insurance test, said villagers were frightened of being tested because they feared victimisation and death.
Scores of migrant labourers have returned to the village from the cities severely ill.
"They have come home to die ... it's a devastating situation."
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