Limpopo has recorded two infections — both officials, not prisoners.
One infection has also been recorded at the department's head office in Pretoria.
No other provinces have recorded positive coronavirus infections at their facilities.
Correctional services spokesperson Singabakho Nxumalo said the department “remains committed to enforce measures to prevent the further spread of Covid-19 in all our centres”.
“We will continue drawing from the expertise of the department of health to provide necessary quality health care to those in need,” he said.
“The wellbeing of officials and inmates and their health remain our priority. We will continue working with all stakeholders to implement our Covid-19 disaster management response strategy.”