More than 30 people have died following an outbreak of Listeriosis.
Health Minister Dr Aaron Motsoaledi announced on Tuesday morning that while Listeriosis is a serious disease, it is a disease which can be treated with antibiotics.
Listeria bacteria are most commonly found in raw foods. Vegetables can be contaminated by soil and water carrying bacteria.
Motsoaledi said people who are most vulnerable include the elderly, children, newborns or those who are ill.
Approximately 557 cases have been reported, with the majority coming from Gauteng province.
He said they had traced 70 patients, of whom 36 died.
The symptoms vary with the infected person.
On high-risk persons other than pregnant women, symptoms can include fever, muscle aches, headache, stiff neck, confusion, loss of balance, and convulsions.
— South African Gov (@GovernmentZA) December 5, 2017