Warren Gatland has reacted in philosophical fashion to Wales' Rugby World Cup injury curse, by admitting: "You cannot dwell on it - I can't do anything about it."

The Wales head coach has made three injury-enforced changes for Thursday's crucial Rugby World Cup Pool A clash against Fiji in Cardiff.

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Bristol full-back Matthew Morgan replaces Liam Williams, who is recovering from concussion, while centre Tyler Morgan replaces knee injury victim Scott Williams and wing Alex Cuthbert takes over from Hallam Amos, who is sidelined from the rest of the tournament with a shoulder problem.

It is otherwise the same team that beat England at Twickenham three days ago, with James Hook, who was called into the squad as a replacement on Monday, named among the substitutes.

Gatland has already lost almost a sixth of his original World Cup squad, with Scott Williams and Amos joining fellow casualties Leigh Halfennny, Rhys Webb and Cory Allen.

But victory over Fiji would put Wales within touching distance of securing a quarterfinal place from arguably the toughest group in World Cup history, given that it also includes Australia.

"I was talking to (Wales' national medical manager) Prav (Mathema) yesterday, and he said it is probably the worst run of injuries he's been involved with as a team," Gatland said.

"You cannot dwell on it - I can't do anything about it. You just move on and go forward.

"I don't dwell on it. I can't change it. You are disappointed for the players, but you move forward to prepare for the next match.

"We've still got guys who are battered and bruised this morning, and we've got a game in two days.

"I don't know whether four or five-day turnarounds in World Cups are too short. We are not complaining, as we've known about that for a long time and prepared for it.

"When you are involved all the time, you don't see the changes, but the only gauge I have as a coach is my involvement with the Lions in 2009 and 2013.

"In that four years, seeing the difference in physicality. South Africa is one of the most physical countries to go and play and then, from South Africa to Australia, the step up in physicality and intensity increased massively.

"It's something we all need to be aware of because it's a pretty brutal game at the moment. It's important we consider and look after the welfare of our players as well."