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10 SPECIAL RECOMMENDATION A special committee of workshop participants was appointed by the chairman to develop a resolution indicating the need for defining "biologic clean air." It was recommended that the intent of the resolution become a continuing effort of the workshop's members. The resolution read: "That it is recognized that there is a need for a defi- nition of classes of biologic air cleanliness. Such a defi- nition should also contain a standardized method for deter- mining changes in, or new classes of, cleanliness. Such a definition must include not only the number of viable particles per cubic foot of air in specified areas, but also the methods by which they are counted, and the definition of the other factors which deserve consideration. Therefore, it is recommended that there come into being a multidisciplinary group, preferably of the attendees of this conference, who are delegated to prepare such definitions and who would write a 'Tentative Statement on the Definition of Biologic Clean Air.' This would give guidance to researchers in the field. Ultimately, this might enable surgeons to specify the air quality they might desire."