Contamination of public facilities with Dermatophagoides mites (Acari: Pyroglyphidae) in Japan.

Public facilities in Japan were investigated for the presence and distribution of allergenic mites. Dust was analysed from four hospitals, two hotels, two ryokans, one film theatre and four office buildings. Clinically important antigen levels were found in the theatre, and ryokans, but not in the hospitals, hotels or offices.