The move follows the recent COVID-19 cases involving a Singapore Airlines (SIA) steward and a pilot.
The crew will also be required to self-isolate until they receive a negative result from their seventh-day PCR test, said CAAS.
The crew travelling to and from South Africa will also wear full personal protective equipment (PPE), including N95 masks, face shields, protective gowns and gloves.
These requirements have already been in place for crew travelling to and from the United Kingdom since December 24.
South Africa and the UK have recently reported cases of the new variants of the coronavirus that are potentially more contagious.
Singapore has reported 58,411 COVID-19 cases so far with 29 deaths.
(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)
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