Reports of vomit streaming down windows as more than 100 University of Canterbury students fall ill, with cause of stomach bug being investigated

A mass outbreak of suspected food poisoning has caused “carnage” across two university halls in New Zealand, with reports of early morning queues for toilets, vomit dripping down building windows and students abandoning exams to dash to the loo.

More than 100 students reported being struck down with vomiting and diarrhoea at two University of Canterbury student residences on Sunday night, the university confirmed on Tuesday.