The second one-day international between South Africa and England, set for Monday, has been postponed.
It was a decision taken jointly by Cricket South Africa (CSA) and the England and Wales Cricket Board (ECB).
They are waiting for “independent ratification” of “unconfirmed positive Covid-19 tests” for two unnamed members of the England tour party.
Games on Friday and Sunday were called off after positive tests by a South Africa player and hotel staff.
After Sunday’s first ODI was abandoned, England said two of their party had returned “unconfirmed positive tests”.