Yet detailed, comprehensive investigations of building-associated outbreaks are infrequent due to the resources and personnel required to conduct them. Control and abatement of SBS is dependent upon reliable and useful investigation and diagnosis. An understanding of the http://buldozer.comuv.com nature and causes of SBS is essential to such investigations and diagnoses. Yet no clear understanding of SBS and no widely accepted definition of SBS exists. In fact authorities in the field use differing definitions or confusing terms which do not increase understanding of the phenomenon.