The historian Procopius wrote, in Volume II of History of the Wars, of his personal encounter with the plague and the effect it had on the rising empire. In the spring of 542, the plague arrived in Constantinople, working its way from port city to port city and spreading around the Mediterranean Sea, later migrating inland eastward into Asia Minor and west into Greece and Italy. The Plague of Justinian is said to have been "completed" in the middle of the 8th century. Because the infectious disease spread inland by the transferring of merchandise through Justinians efforts in acquiring luxurious goods of the time and exporting supplies, his capital became the leading exporter of the bubonic plague. Procopius, in his work Secret History, declared that Justinian was a demon of an emperor who either created the plague himself or was being punished for his sinfulness. Second pandemic
In the Late Middle Ages Europe experienced the deadliest disease outbreak in history when the Black Death, the infamous pandemic of bubonic plague, hit in 1347, killing one-third of the European human population. Some historians believe that society subsequently became more violent as the mass mortality rate cheapened life and thus increased warfare, crime, popular revolt, waves of flagellants, and persecution. The Black Death originated in Central Asia and spread from Italy and then throughout other European countries. Arab historians Ibn Al-Wardni and Almaqrizi believed the Black Death originated in Mongolia.
This is a scale that can help practitioners evaluate the condition in a standardized way.The course of treatment is typically based on the age of the child when the diagnosis  is made in conjunction with the severity of the diagnosis. If a diagnosis of mild to moderate plagiocephaly occurs before four months of age, repositioning therapy may be helpful. If the diagnosis is determined to be severe, practitioners will likely prescribe a cranial molding orthosis (helmet), which has the best results when prescribed between five to six months of age. Repositioning
Initially, treatment usually takes the form of reducing the pressure on the affected area through repositioning of the baby onto their abdomen for extended periods of time throughout the day.This may include repositioning the childs head throughout the day so that the rounded side of the head is placed against the mattress, re-positioning cribs and other areas that infants spend time in so that they will have to look in a different direction to see their parents or others in the room, re-positioning mobiles and other toys for similar reasons, and avoiding extended time sleeping in car-seats (when not in a vehicle), bouncy seats, or other supine seating which is thought to exacerbate the problem. If the child appears to have discomfort or cries when they are re-positioned, a neck problem should be ruled out. Helmets
High quality evidence is lacking for cranial remolding orthosis (baby helmet) for the positional condition and use for this purpose is controversial.