The Centre for Health Protection has advised a Yau Ma Tei kindergarten to suspend classes for one week for disinfection as its 47 students and one staff have taken sick leave.

Of them, 33 students developed fever with mild respiratory or gastrointestinal symptoms varying from cough, sore throat, vomiting and diarrhea from April 10. Initial investigations suggest the cause is a viral infection.

Four students were admitted to Kwong Wah Hospital and Queen Elizabeth Hospital. All of them are now in stable condition.

Meanwhile, the centre has confirmed an upper respiratory tract infection outbreak involving 18 children and two staff at a Mong Kok children's home.

They came down with fever, cough, runny nose and sore throat April 4 to 11. Five consulted general practitioners or outpatient clinics while five others were admitted to Queen Elizabeth Hospital. Their condition is stable.

Three patients tested positive for respiratory syncytial virus. Details on the virus can be found here.

The centre's staff have visited the home and provided health instructions.