ACKNOWLEDGMENTS:
We thank the support from hospital team and various heads of unit in Sarawak Heart Centre that make this surveillance possible. We acknowledge the funds donated by the Persatuan Kakitangan PJS (SHC Staff Society) to purchase the antibody rapid test kits. We thank our hospital’s occupational safety team and the infectious disease team of Sarawak General Hospital for all their coordination and support during the surveillance. The authors would like to thank the Director General of Health Malaysia for the permission to publish this paper.