Students, teachers and people who had been to these four schools from October 23 to today will have to undergo testing by the coming Sunday (Nov 7).

The four schools include:

- S.K.H. Good Shepherd Kindergarten, G/F on Kiang Hsi Street in To Kwa Wan

- Holy Trinity Centre Kindergarten & Day Nursery, G/F-2/F on Ma Tau Chung Road in Kowloon City

- Primary 5 of Immaculate Heart of Mary School on Mei Tin Road in Sha Tin

- Primary 4 of TWGHs Wong Yee Jar Jat Memorial Primary School on Hok Lam Lane in Tseung Kwan O

If they choose to undergo testing using the specimen bottles distributed by the Centre for Health Protection, they have to return the specimen bottles with the sample by next Tuesday (Nov 9).

They can be exempted from undergoing the test again if they had tested negative between Wednesday and today.