All Blacks head coach Steve Hansen has two fitness concerns ahead of New Zealand's clash with Wales in Cardiff after Kieran Read and Ardie Savea both sat out training Tuesday.
Hansen puts his 100 percent record against Wales on the line Saturday, when New Zealand face a Warren Gatland side which earlier had Liam Williams and Alex Cuthbert ruled out of the game.
Back row Savea has been isolated from the rest of the All Blacks squad having contracted mumps, with assistant coach Ian Foster confident there is no danger that the highly-contagious viral disease might spread.
"Ardie has got a mild dose of the mumps. He's the only one, so he's in his room, he's been in isolation," Foster said. "Are we worried about it? No. Have we taken every precaution? Yes.
"Clearly Ardie must have been in pretty close contact with Reiko [Ioane] at some point."
Foster also confirmed that All Blacks captain Read did not train following a bruising couple of weeks.
"He [Read] is a bit battered after the last couple [of games] and we took him out of training today to give him a chance for another 24 hours so he'll recover quicker," assistant coach Ian Foster said.