Strettle was hospitalised after picking up a stomach bug last week

Strettle spent several days in hospital for rehydration treatment, although he was discharged over the weekend.

Six Springboks also have a virus but forwards coach Gert Smal expects them to be fit for Saturday's second Test.

And England captain Jason Robinson is expected to play despite missing Tuesday's training near Pretoria.

Robinson took a bang on his leg during the 58-10 loss in Bloemfontein, but he said: "I am not concerned."

Fly-half Jonny Wilkinson, who was England's top tackler in the first Test, suffered facial cuts and bruising to his back but was able to train on Tuesday.

Centre Andy Farrell and scrum-half Peter Richards, who missed the first Test after picking up the stomach virus, which swept through the England camp last week, also trained in Centurion.

Robinson was joined on the sidelines by flanker Andy Hazell (knee) and wing James Simpson-Daniel, who was feeling under the weather.

We don't think the score is going to be the same as the first Test Jason Robinson

Danie Rossouw, Deon Carstens, Ashwin Willemse, BJ Botha, Wynand Olivier and Waylon Murray - all starters except Murray in last Saturday's win - were kept away from Springbok training on Tuesday.

But Smal said: "Fortunately we have a lot of depth, and what we are actually doing is trying to phase in different players in any case so if anything happens they will be ready whenever they have to come in."

England travelled to South Africa without 30 of their senior players because of club commitments and injuries.

And they have since lost Gloucester pair Iain Balshaw (shin) and Nick Wood (torn chest muscle).

But despite the setbacks, Robinson, who will retire after the World Cup, insists England are desperate to have another crack at South Africa at Loftus Versfeld.

"There is a lot of frustration after the Bloemfontein game, but Saturday cannot come around quickly enough, to be honest," he said.

"There has been disappointment, but one thing that hasn't dipped has been the team spirit. The spirit is probably the best I've ever been involved in with a team.

606: DEBATE I was very impressed with Jonny Wilkinson on Saturday, his kicking and tackling were superb HB

"There is no lack of enthusiasm. Everyone believes we can turn this around.

"We know we can play a lot better than that, but you cannot give South Africa turnover ball like we did or they will punish you.

"I think it is good preparation for the World Cup. It has given a chance to expose some guys to this environment and challenges you face at Test level, especially in South Africa.

"We don't think the score is going to be the same as the first Test.

"What we enjoy as players is going out there when your backs are against the wall, when everyone has written you off, and proving them wrong. That's what we have got to do."

England coach Brian Ashton will delay naming his side for Saturday's second Test until at least Wednesday.