What does buffer ward mean?

_Buffer ward, also called isolation ward, is a single room ward in an area of ??the ward that is relatively easy to manage and has less traffic.

The buffer ward is based on patients. Each patient has a separate living environment and equipment, and is isolated from other patients. Buffer wards are based on disease type: patients with the same disease type can live in the same ward, but they should be isolated from infectious patients with other types of diseases and cannot be mixed.