The Rand Show (once known as The Rand Easter Show) has been postponed following President Cyril Ramaphosa's State of Disaster briefing on Sunday.
During the briefing, the president said that the country should implement social distancing procedures to lessen the expected impact of the coronavirus on the nation's population.
Boarders were tightened, foreign visas were revoked, and an ordinance was passed that no gathering of more than 100 people would be allowed.
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The show was show was scheduled to run from Wednesday 8 April until Monday 13 April at Joburg's Expo Centre.
In a statement on their website, the organisers of The Rand Show said: "As one of this country's longest-running events, we've been through a lot, standing side by side with our fellow South Africans; we are an integral part of the community and its spirit.
After listening to President Cyril Ramaphosa's address and in the best interests of our community, we have decided to postpone the show. The event will be rescheduled at a later stage and will be done in consensus with government."