Travellers to Sabah who returned before the mandatory quarantine order imposed on September 27 must go for the Covid-19 screening if they show any symptoms or had been in close physical contact with anyone who has been tested positive for Covid-19, said Tan Sri Dr Noor Hisham Abdullah.br br The Health director-general said that on Thursday, adding that those without symptoms and close contacts were "highly recommended" to get screened as well.