Johannesburg mayor Geoff Makhubo has gone into self-isolation after a staffer in his office tested positive for Covid-19 on Monday.

According to a statement by mayoral spokesperson Mlimandlela Ndamase, the staff member in the mayor's office tested positive for the virus following a trip to the Western Cape for a funeral last week.

However, as a precautionary measure, the mayor has today undergone another Covid-19 test and has decided to place himself under self-isolation until the results are known," Ndamase said.

"The entire staff complement in the executive mayor's office has also, as a precaution, undergone tests to determine their Covid-19 status."

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Ndamase added that employees in the mayor's office will be operating from isolated sites as prescribed by the protocols in place to prevent the spread of Covid-19.