PUTRAJAYA (Bernama): A total of 516 oxygen concentrators will be placed at Hall A and C of the Malaysia Agro Exposition Park (MAEPS) Integrated Quarantine and Treatment Centre (PKRC) 2.0 in Serdang, where Category Three and Four Covid-19 patients are being treated. MAEPS PKRC 2.0 director Dr Shahabuddin Ibrahim said the move was in preparation of patients’ increasing need for oxygen. He said currently 1,670 patients are being treated at MAEPS PKRC 2.0, of whom, 1,300 patients are under category three and over 200 under category four. "Our manpower is focused on patients under these two categories," he told Bernama on Wednesday (July 21). Category three refers to cases with pneumonia but not requiring oxygen, while category four refers to those with pneumonia requiring oxygen.