Abstract
On May 30, 2004, samples of fungi growing in a house in Yokosuka, Kanagawa Prefecture were taken for investigation. Airborne fungi were collected using an air sampler and surface fungi were collected using a sterile stamp bottle. A large number of Aspergillus ochraceus were isolated from the samples. On investigation, one strain of A. ochraceus isolated from a kitchen sample showed a strong ability to produce ochtatoxin A. No large-quantity outbreak of A. ochraceus in an ordinary house has been reported previously, and is a rare occurrence.
