CAIRO - President Hosni Mubarak will not go to an African Union summit, which opens Sunday in Uganda, the official Middle East News Agency reported. Mubarak has delegated Prime Minister Ahmed Nazif to represent Egypt at the summit , which is expected to address the sensitive issue of sharing Nile waters and Somalia. In an effort to discount intensifying rumours over mubarak's health, government officials on July 14 cited the President's packed schedule, including the African summit, as evidence of his continuing vigour. On Wednesday, Presidential spokesman Suleiman Awwad again dismissed reports Mubarak was ill and said his staff were "out of breath" trying to keep up with his schedule.