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.
The definition of a disseminator is  someone who spreads gossip or news to others. A person who runs around and tells every single one of your friends about your pregnancy is an example of a disseminator.