[Addis Standard] Addis Abeba -- Residents of Guji, West Guji and Borana zones of Oromia regional state told Addis Standard that diarrhea outbreak was ravaging many households in several areas. However, local and region health officials who spoke to Addis Standard said there was shortage of water purifying chemicals and medicines to filter the water being delivered by water trucks, which is contributing to increased number of diarrhea cases but it has not reached the level an outbreak.