The government explained there is an outbreak of upper respiratory tract infection and influenza-like illness in the school located on Sau Ming Road in Sau Mau Ping. The symptoms of the diseases concerned are similar to those of Covid-19, it added.

Teachers and students who had face-to-face lessons from September 23 to October 6 will have to undergo testing by Friday (Oct 8).

They could only be exempted from taking the test if they had tested negative between Monday and Wednesday, or they had completed a Covid-19 vaccination course.