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Over the past quarter-century, the global spread of HIV virus has become one of the deadliest epidemics in modern times.
In 2007 a total of 2.1 million men, women, and children died of AIDS.
Randomized stratification was used for selection of provinces and Gilan, East Azarbaijan, West Azarbaijan, Ghazvin, Tehran, Semnan, Kurdistan, Ghom, Isfahan, Khorasan, Yazd, Lorestan, Hormozgan were selected.
Forty blood samples from HIV infected individuals were collected from Tehran University of Medical Sciences clinics, Tehran, Iran.
The death toll will remain high in the future because 33.2 million individuals are currently infected and about 2.5 million new HIV infections occur each year (1).