Former ANC Western Cape chairperson Marius Fransman announced in a Facebook post he had contracted Covid-19.
Fransman, the former deputy minister of international relations and co-operation in former president Jacob Zuma's administration, said he had returned from abroad two weeks ago and began to feel ill.
He was tested and it was confirmed he had the coronavirus.
Fransman, who is recovering in hospital, said he was "doing fine".
"... my family is being taken care of and will undergo relevant tests, so have I advised those who came into contact with me the last month.
"I am doing well under the circumstances, and want to appeal to everyone to get themselves tested if you show symptoms and let's all start practicing good hygiene, adhere to the lockdown regulations, and all join in the call to flatten the curve," he wrote.
Fransman spent most of his political career in ANC branches in the Western Cape and was the former chairperson of the party in the province.