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. 2021 Apr 14;16(4):e0249394. doi: 10.1371/journal.pone.0249394

Fig 2. Surveillance flow chart and total HCWs for the study.

Fig 2

The surveillance system was only meant for HCWs with work-related exposure. HCWs with community exposure were under the surveillance of the District Health Office. *HCW, healthcare worker; UMMC, University Malaya Medical Centre; RT-PCR, reverse transcriptase-polymerase chain reaction.