Wood has not featured for Leeds since the 1-1 draw at Brentford at the end of January in which the 24-year-old limped off with a fresh hamstring problem, having only just recovered from a similar injury.
And Whites head coach Steve Evans revealed in Thursday afternoon’s pre-Watford press conference that the New Zealand international now also had a virus and would definitely play no part of the fifth round tie at Vicarage Road.
Evans had better news concerning right back Gaetano Berardi who has trained this week and could finally return from a long lay off with a torn ankle ligament.
“Chris won’t make it for the weekend,” said Evans.
“I’m never one to sit there and give hope when there’s not and he’s just not quite right.
“We can’t establish whether it’s his hamstring because he’s just got a little virus that gives you a problem top to bottom and people will know what I mean by that.
“That completely rules him out and that would have ruled him out on his own.
“We’ll need to pick up with him on Sunday just where he is.”
Asked about the prospects of Berardi featuring, Evans said: “Berardi has trained and trained very well so he could be an option to us in the event that we want to put him in.”