Christchurch's Bromley School yesterday closed for seven days, while Linwood College and Linwood Intermediate sent scores of pupils into isolation.
A further 94 workers from Woolston company Sea Products were quarantined at home for three days.
A second company is likely to face quarantine measures today.
They follow 77 pupils and teachers from Burnside High School and 59 from the Tino E Tasi preschool already in quarantine.
Last night, Linwood College, a school of nearly 1000 pupils, cancelled its open night after one Year 9 student was confirmed with swine flu.
http://www.stuff.co.nz/the-press/news/christchurch/2506546/Hundreds-in-isolation-as-swine-flu-takes-hold
