Definition. Shigella infection (shigellosis) is an intestinal disease caused by a family of bacteria known as shigella. The main sign of shigella infection is diarrhea, which often is bloody.Shigella can be passed through direct contact with the bacteria in the stool.efinition. Shigella infection (shigellosis) is an intestinal disease caused by a family of bacteria known as shigella. The main sign of shigella infection is diarrhea, which often is bloody.
The Giza Pyramids, built to endure an eternity, have done just that. The monumental tombs are relics of Egypt's Old Kingdom era and were constructed some 4,500 years ago. Egypt's pharaohs expected to become gods in the afterlife.
Early Egyptian kings were buried in mounds called mastabas. In approximately 2780 BC the first Egyptian pyramid was built as the burial chamber for King Djoser. Located at Sakkara near Memphis, Djoser's burial chamber was a step pyramid. According to the Smithsonian Museum the first smooth-sided pyramid was built during the reign of King Snefru, sometime between 2680-2560 BC. Snefru's son, Khufu, is responsible for building the most famous of all the pyramids, the Great Pyramid at Giza.