News Talk ZB (Auckland)
More people are coming down with a highly infectious illness which has broken out in Northland.
Jonathan Jarman of the Northland District Health Board says there have been 25 cases of the bacterial infection Shigellosis reported in a week.
Normally there are only a couple a year.
Symptoms include abdominal cramping and diarrhoea and the illness can be severe if caught by children or the elderly.
Dr Jarman says there is increasing evidence that the illness originated from contaminated oysters collected from the Opua marina in the Bay of Islands.