The makers have examined 455 fingerprint cards of accidents at biologic risk needed in a sanitary structure from the month of november 1995 to the month of december 1998. After they have described the protocol of the sanitary supervision applied, the procedure of the accidents, the qualifications, and the departments mainly interested by the subject of study event, they have pointed out the need of a greater vaccinable covering against the virus B, parvying attention to the "non responders" subjects, thinking also it's necessary bigger resources for the personnel, training and information.