Acute viral hepatitis is inflammation of the liver caused by infection with one of the five hepatitis viruses. In most people, the inflammation begins suddenly and lasts only a few weeks. Symptoms range from none to very severe.
Usually, the 'communication process' is dissemination is one-way. It may form part of a two-way process but this is not implicit in the term. It may also refer to the transfer of research outputs to meet specified demands or requests for 'information'. Definition 19: Dissemination - distribution.
When you add the prefix dis-, you add the idea of separation, so to disseminate means to spread seeds widely. These could be literal seeds, like the dissemination of Oak genes by the scattering of acorns, or metaphorical seeds of ideas, like the dissemination of radical ideas through blogs, zines, and list-servs.