The third Test in the four-match series against South Africa starts at St George's Park on Thursday.
Ollie Pope, Chris Woakes and Jack Leach were ruled out of the 107-run first-Test defeat in Centurion, while Root, Jos Buttler and Ben Stokes spent time off the field.
Coached by Duncan Fletcher and already fast heading toward a famous reclaiming of the Ashes on home soil after a long drought in 2005, that England side got their noses in front in game one in the Friendly City of an enthralling five-Test series they eventually squeezed out 2-1 in their favour.
In March 1889, St George's Park became the first ground to stage Test cricket outside of England and Australia. Wood was England's second-highest wicket-taker at the ICC Men's Cricket World Cup 2019 after picking up 18 wickets from ten matches. They will join the national team if and when required'.
The England captain was absent from the team session in Port Elizabeth due to an upset stomach, the second time he suffered an illness on a tour that was dominated by absences.
Batting frailties: Both teams have relatively inexperienced, potentially vulnerable batting line-ups.
The Somerset left-armer missed the final Test against New Zealand and has not bowled a ball competitively in South Africa after being hit by bouts of flu and gastroenteritis.
The Stokes factor: Ben Stokes had an vast influence on the second Test at Newlands, with the impact of his batting and bowling exceeding his statistics.
Bowling conundrums: Notwithstanding Rabada's feats in 2017/18, spin bowlers generally expect some help from the St George's Park pitch.
The transformation target sets out for six players of colour - including two black Africans - to be selected in the South Africa squad.
First-choice spinner Jack Leach features however to show up on trip after dropping sick immediately after arrival. He can be back assertion for a spot into the beginning line-up.
- a complete of 68,662 spectators created an exciting environment at Newlands but anecdotal proof implies that around 40,000 of these had been supporting England.
Port Elizabeth features pleasant shores and it is close to online game reserves it is almost in identical league as a drawcard for tourists.
Nevertheless some 5,500 tickets were sold in advance for the first day and it is likely most of those were bought on behalf of England fans, with locals generally preferring to turn up on the day.