Single, scattered; not epidemic; occurring at isolated geographical and/or temporal loci, especially when referring to a disease.
Occurring only occasionally.
Referring to outbreaks of disease that occur as separate cases, not in epidemics.
Occurring occasionally or in a few isolated situations, as in the sporadic appearance of a disease.
Occurring irregularly, alone, or without linkage to other events.
Manifesting in an isolated manner or displaying sporadic occurrences without any discernible pattern.