Diseases caused by hospital infection including infections from hepatitis B and C viruses and MRSA have become social issues in recent years. In this study, we periodically evaluated contamination of areas around the waiting room of pediatric dentistry, in the entrance to the medical treatment room.
1. About two-fold more colonies grew on the general medium in the evening, and the relation was not found by the number of patients, and the number of colonies.
2. Many colonies grew on the general medium in the play area, and the highest colony count was obtained in the air-ventilating region of the air conditioner.
3. Similarly, more colonies grew on the medium for MRSA in the evening than in the morning, and the highest number of false-positive colonies was obtained in the air-ventilating region of the air conditioner.
4. Colonies judged false positive were subjected to identification using slide latex agglutination, and all of the colonies were negative.