1. A single instance or occurrence of something that is not typical or representative of a broader pattern; an exception rather than the rule
The accident was considered an isolated case and did not affect the company's safety record.
O acidente foi considerado um caso isolado e não afetou o histórico de segurança da empresa.
2. An individual incident that stands alone without connection to similar events
The doctor assured us that this complication was merely an isolated case.
O médico nos garantiu que essa complicação era apenas um caso isolado.