B-BOX is a light temporary system for the immediate isolation of infectious persons. The room made of PVC coated fabric, suspended under the inflatable structure is equipped with gas-tight zippers, filters and filter-ventilation units. The system is packed in a compact transport bag, along with filter-ventilation units and filters. The package also includes an electric inflation pump and, optionally, a hand pump and a reducer for a 300-bar pressure bottle. It only takes a few minutes to unpack and inflate the structure. The filter-ventilation units are powered by their own batteries with an operating time of up to 10 hours.