Joe Root's team, missing Ben Stokes and Jofra Archer, need a convincing win in the two-match series to keep alive their hopes of reaching the World Test Championship final.
The squad will immediately undertake two weeks of quarantine and training in Hambantota, during which they will be tested every two days.
Kallis coached Kolkata Knight Riders in the Indian Premier League and worked with the South Africa team, but was not part of the set-up for England's recent coronavirus-disrupted tour.
International cricket found a way through this year's coronavirus pandemic but the strain of 'bubble life' was evident by the end of 2020.
The 33-year-old left-hander climbed to number one in the world in September after a relentlessly consistent period of scoring in the format and has followed up with a man-of-the-series performance.
Judge Zak Yacoob, chairman of the interim board of Cricket South Africa (CSA), said in a message sent to reporters that the body's members' council had made the decision to recognise the board after a weekend of uncertainty.
The 30-year-old Wood has played just 16 Tests since his debut five years ago, with his subsequent career blighted by three ankle operations.
The international season begins with a three-match T20 International series and three-match One-Day International (ODI) series against England in Cape Town and Paarl.
The tour will be limited to the Western Cape with two ODI matches and two T20 matches to played at Newlands Stadium, and one ODI and one T20 match at Eurolux Boland Park, Paarl.
Players have since been confined to bio-secure environments on tours and during tournaments, including at the ongoing Indian Premier League in the United Arab Emirates.
Maxwell's hundred was just his second century in 113 matches at this level, with Carey's innings the wicketkeeper's maiden century in his 39th ODI.
World champions England were on the brink of going 2-0 down in a three-match contest at Old Trafford and losing their first bilateral ODI series since 2017 when Australia, chasing a target of 232 for victory, were 144-2.
Hazlewood struck twice early on during a miserly haul of 3-26 from his full 10 overs as Australia defeated arch-rivals England for just the third time in 14 ODIs.
The 33-year-old left-hander is not a high-profile figure in the world game but has burnished his record after scores of 66, 42 and 21 against Australia saw him jump four places in the ICC standings.
Langer watched his players go hard at it in two intra-squad warm-up match in Southampton on Tuesday, with Marnus Labuschagne and Alex Carey smashing rapid centuries in the second encounter.
Pakistan, following on, were 100-2 - still 210 runs behind England's first innings 583-8 declared - at the close.
Crawley's commanding 171 not out was the centrepiece of England's 332-4 at stumps after captain Joe Root won the toss.
England had made 110-4 declared in reply to Pakistan's first innings 236 when a draw was agreed in a match repeatedly interrupted by bad weather.
