Johnstone

Vuono,

J. The issue raised in this appeal is whether in a trial pursuant to G. L. c. 123A, § 9, the Commonwealth may satisfy the requirement that it produce expert testimony to prove continuing sexual dangerousness by relying solely on the community access board’s (CAB)1 unanimous opinion. That opinion *124was introduced by a board member who is also a qualified examiner as defined under G. L. c. 123A, § 1. In the circumstances of this case, where the board member testified solely as the CAB’s representative, and the qualified examiners who examined the petitioner in connection with the c. 123A, §…