The causes of massive splenomegaly (spleen >1000 g) are fewer, and include: 1  visceral leishmaniasis (kala-azar) 2  chronic myelogenous leukemia. 3  myelofibrosis. 4  malaria. 5  splenic marginal zone lymphoma.
Examples of how it can be spread are: Someone infected with the mumps virus is contagious for approximately 15 days (six days before the symptoms start to show, up to nine days after they start). The mumps virus is part of the paramyxovirus family, which is a widespread cause of infection, especially in children.Normally, mumps can be diagnosed by its symptoms alone, especially by examining the facial swelling. In addition to examining this area and taking a note of the symptoms, a doctor may:umps is an extremely contagious viral infection that usually affects children. The condition has a number of symptoms, the most common one being swelling of one or both of the salivary glands on the sides of the face.
The viruses that can cause encephalitis include: Herpes simplex virus (HSV). Both HSV type 1 â associated with cold sores and fever blisters around your mouth â and HSV type 2 â associated with genital herpes â can cause encephalitis. Encephalitis caused by HSV type 1 is rare but can result in significant brain damage or death. Other herpes viruses. These include the Epstein-Barr virus, which commonly causes infectious mononucleosis, and the varicella-zoster virus, which commonly causes chickenpox and shingles. Enteroviruses.