Infected detainees could have been initially tested negative when virus was still in incubation period, says Dr Noor Hisham

PETALING JAYA: Immigration detainees with Covid-19 may have gone undetected because the initial screening was done while the virus was still in the incubation stage, says Health director-general Datuk Dr Noor Hisham Abdullah.

Their test may have been negative when they were first detained and this could have led to Covid-19 outbreaks at immigration detention centres, he said.