A number of Taradale High School students were still too unwell to attend school yesterday, following a mysterious vomiting outbreak at Frimley Pools.
On Wednesday the school's swimming sports were cancelled before 11am after 20 students began vomiting and another 20 students reported feeling nauseous.
Taradale High School principal Stephen Hensman said four of the students who had experienced vomiting on Wednesday were still off school yesterday. Another six who had been feeling nauseous were also not feeling well enough to attend school.
Mr Hensman said health protection officers from the HBDHB were carrying out some medical testing of students who were still feeling unwell.
The officers had also visited the homes of some affected students yesterday, and questionnaires were being prepared for students - those who were ill at the pools, and those who used the pools but remained unaffected.