The country maintains one of the world 's youngest populations , though officials say literacy rates among both children and adults remain low . At least 140 Afghan male and female teachers were taken to a local hospital . Their drinking water had been poisoned , health officials say . No deaths have been reported . In 2010 , more than 100 students and teachers were sickened in similar poisonings .
At least 140 Afghan male and female teachers were taken to a local hospital . Their drinking water had been poisoned , health officials say . No deaths have been reported . In 2010 , more than 100 students and teachers were sickened in similar poisonings .