Makamba was confirmed positive with the virus on Saturday after being admitted to Wilkins hospital.
He was the second person be confirmed to have the coronavirus.
The Ministry of Health said yesterday he had been in contact with at least 18 people and so far four of the seven identified and followed up had tested negative.
BancABC Zimbabwe today said Makamba visited their Mount Pleasant branch on 17 March and had a meeting with four staff members.
“The Bank was subsequently advised that the patient had tested positive for COVID-19 on Saturday morning and immediately activated recommended protocols in consultation with the City Health Department,” the bank said in a statement.
“Out of the abundance of caution, all employees who interacted with the patient and their contact persons were immediately identified for further management. Whilst none of the affected employees have shown any symptoms, preventative measures which include a 14 Day Self-Quarantine, as per health officials guidelines, have been activated.”