5. Other Exclusion Criteria: a) Prisoners or subjects who are involuntarily incarcerated. b) Subjects who are compulsorily detained for treatment of either a psychiatric or physical (eg, infectious disease) illness. c) Any underlying medical or psychiatric condition that, in the opinion of the investigator, could make the administration of ipilimumab hazardous or could obscure the interpretation of adverse events. d) Any non-oncology vaccine therapy used for prevention of infectious diseases for up to 4 weeks before or after any dose of ipilimumab, with the exceptions of amantadine and flumadine.