BELLEFONTE, Pa. - One of the jurors in Jerry Sandusky's child sex abuse trial has been excused for an illness on what could be the final day of testimony.

The juror was excused at the start of Wednesday morning's session in the former Penn State assistant football coach's trial. She was replaced by a female alternate.

The main defense witness during the first morning session Wednesday was Dr. Jonathan Dranov. The physician says he spoke to then-graduate assistant Mike McQueary the night McQueary said he spotted Sandusky in a football facility shower assaulting a boy.

Dranov says McQueary was "visibly shaken and upset" the night he claimed he caught Sandusky performing a sex act with a boy. But Dranov says McQueary did not specifically say he witnessed an assault.