from the populationbased survey botswana aids impact survey bias ii the national average prevalence was estimated at per cent while for those aged years it was estimated that per cent was hivpositive csonaca a third populationbased survey was completed and preliminary results have just been released indicating some slight increase in prevalence to per cent csonaca women account for a majority about per cent of people living with hivaids just like botswana lesotho has been experiencing declines in infection levels among young pregnant women falling from per cent in to per cent in