Hamilton was held out of practice Wednesday due to the flu, Amalie Benjamin of the Boston Globe reports. Hamilton's status for Friday's game against the Blue Jackets may come in doubt if he doesn't improve over the next couple of days. The Bruins' defensemen have been bit by the injury bug this season, and could ill-afford to lose another for an extended period of time. If Hamilton can't go Friday, the team would likely need to make a move to add a sixth blueliner to the roster.