infected area; epidemic area
Refers to a geographical area where an infectious disease is prevalent. Often used in public health or quarantine contexts.
An advisory was issued to avoid travel to infected areas.
People returning from epidemic areas must undergo quarantine.
A more general term for an infected area, not necessarily implying an epidemic. 伝染病流行地 specifically emphasizes the prevalence of a communicable disease.
Compound of 伝染病 (infectious disease), 流行 (prevalence), and 地 (area). The term is straightforwardly derived from its components.