Vaccine's for Non-Hodgkin's Lymphoma are a very promising science, but one that is still in the clinical trial stages. Just like the name suggests, vaccines are an attempt to prevent relapses. Most of the vaccine trials are focusing on the indolent varieties of NHL at this time, and many of them are showing very promising early results.
Karl Schwartz has done a fantastic job of collecting and organizing the massive amount of information available about vaccines. Rather than duplicate all his excellent work here, click on the link below to go directly his web site "Lymphomation". This link will take you directly to the vaccine area of the Lymphomation web site.