GENEVA, March 27 (Reuters) - Another 12 countries have been certified free of guinea worm and the world could be free of the parasitic disease within two years, the United Nations health agency said on Tuesday.While some 3 million people suffered from the blight in the early 1980s, the World Health Organisation (WHO) said it now affects about 25,000 people in nine African countries, with most prevalence in Sudan and Ghana.>>> Discuss This Story
