Activists say official survey underestimates extent of virus
A study of 280,000 villagers in Henan province who sold blood in the 1990s found more than 36,000 - or about one in eight - have HIV or are Aids patients.
But Aids activists said the results, revealed by provincial health officials on Friday, underestimated the severity of the problem.
Ma Jianzhong, head of Henan's health department, said the comprehensive study examined 280,476 villagers in 51,187 villages in the province who had taken part in illegal blood sales in the 1990s.
The health check found 25,036 HIV carriers and 11,815 Aids patients. The figures included 2,003 cases previously unknown to the authorities.
Illegal blood sales were rampant in the province in the 1990s when 'blood heads' persuaded cash-strapped villagers to sell blood on the black market.