Other+consequences+of+the+discoveries.

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**__Yellow fever__** was another of the cruel impact that the invasion of Europeans and Africans came in the indigenous population. This tragic enemy, like malaria , was accompanied by the mosquito transmitter that made ​​the trip go in water supplies brought by the Spanish ships on their long intercontinental trip. Yellow fever and black vomit ( also called the American Plague ) is an acute, infectious viral disease caused by " the yellow fever virus , which belongs to the family Flaviviridae , genus Flavivirus and Yellow . Is an important cause of hemorrhagic illness in many countries in Africa and South America , despite the existence of an effective vaccine. The yellow of the disease is referred to the signs of jaundice that affects some patients.  It was transmited by the Aedes aegypti //.//


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The parasite was named in 1903 after the Scottish pathologis Wiliam Boog Leishman. The origins of //Leishmania// are unclear. One possible theory proposes an African origin, with migration to the Americas. Another migration from the Americas to the Old World about 15 million years ago, across the Bering Strait land bridge. Another proposes a paleartic origin.Such migrations would entail migration of vector and reservoir or successive adaptations along the way. A more recent migration is that of //L. infantum// from Mediterranean countries to Latin America (there named //L. chagasi//), since European colonization of the New World, where the parasites picked up its current New World vectors in their respective ecologies. This is the cause of the epidemics now evident. One recent New World epidemic concerns foxhounds in the USA.
 * __ Leishmania __** is a genus of Trypaosomadic protozoa and is the parasite responsible for the disease leishmaniasis It is spread through sandflies of the genus Phlebotomus in the Old World and of the genus Lutzomyia in the New World. Their primary hosts are vertebrates;//Leishmania// commonly infects hyraxes, canids, rodents, and humans. //Leishmania// currently affects 12 million people in 88 countries.


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__**Measles**__, also known as **rubeola** or **morbilli**, is an infection of the respiratory system caused by a virus, specifically a paramyxovirus of the genus //Morbillivirus//. Morbilliviruses, like other paramyxoviruses, are enveloped, single-stranded, negative-sense RNA viruses. Symptoms include fever, cough, runny nose, red eyes and a generalized, maculopapular, erythematous rash. Measles (sometimes known as English Measles) is spread through respiration (contact with fluids from an infected person's nose and mouth, either directly or through aerosol transmission), and is highly contagious—90% of people without immunity sharing living space with an infected person will catch it. The infection has an average incubation period of 14 days (range 6–19 days) and infectivity lasts from 2–4 days prior, until 2–5 days following the onset of the rash (i.e. 4–9 days infectivity in total).


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The radiological manifestations are your business card, but we must not forget its clinical manifestations or extramedullary spinal. We will refer the level of care in diagnostic doubt or suspect compressive pathology ( spinal or esophageal level ). We report the case as considering due to its radiological and clinical manifestations.
 * __Hyperostosis__ ** Diffuse idiopathic skeletal hyperostosis ( DISH) is a disease whose prevalence increases with age, and is characterized by a tendency to ossification of tendons , ligaments , periosteum and joint capsules , either spinal extramedullary . Its diagnostic and therapeutic management must be performed by the family doctor.



hyperostosis has been considered a radiological entity whose clinical symptoms are of little importancia6. It is generally true, though to be an old man's own pathology may be obscured by other degenerative diseases. Resnick said that most patients have symptoms of hyperostosis. The most common is the limitation of spinal mobility. Whenever we find a limitation of motion in an old man who does not report pain, we should consider the possibility of a hyperostosis. Hiperostósicos patients, suffering from back pain , cervical pain or back pain more frequently

__**Smallpox**__ is an infectious disease unique to humans, caused by either of two virus variants,//Variola major// and //Variola minor .//The disease is also known by the Latin names //**Variola**// or //**Variola vera .**// Smallpox localizes in small bood vessels of the skin and in the mouth and throat. In the skin, this results in a characteristic maculupapular rash, and later, raised fluid-filled blisters. //V. major//produces a more serious disease and has an overall mortality rate of 30–35%. //V. minor// causes a milder form of disease which kills about 1% of its victims. Long-term complications of //V. major// infection include characteristic scars, commonly on the face, which occur in 65–85% of survivors. Blindness resulting from corneal uceration and scarring, and limb deformities due to arthritis and osteomyelitis are less common complications, seen in about 2–5% of cases. Smallpox is believed to have emerged in human populations about 10,000 BC..


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 * Other diseases**