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.
Although latent infections don't cause the production of new viruses, they cause the viral genetic material to be replicated. One way for a bacteriophage to cause a latent infection is the virus injects their genetic material into the host cell and then the capsid gets degraded. The viral genetic material becomes circularized and basically becomes a piece of plasmid DNA inside the bacterial cell (plasmid DNAs can replicate independently of the host cell's chromosomal DNA).