secondary evacuation shelter; shelter for people needing extra care
A shelter set up after initial evacuation, specifically for those requiring additional support such as the elderly, disabled, or people with medical needs. Often contrasted with 一次避難所 (primary shelter).
In a disaster, people first go to a primary shelter, and then the elderly move to a secondary shelter.
Medical staff are stationed at the secondary evacuation shelter.
Compound of 二次 (secondary) + 避難所 (evacuation shelter). The term is used in disaster management contexts.