400,000 factory workers in Penang to take on-site test

BUTTERWORTH: Some 400,000 factory workers in Penang are expected to take the on-site polymerase chain reaction (RT-PCR) test using the deep throat saliva method to step up mass testing over the next few weeks.

Five factories have tested their workers using the method since Saturday to speed up testing and increase the number of Covid-19 screenings.