Should you be worried about the mumps outbreak?

Low rates of vaccination for some children and teenagers in Auckland is fuelling an on-going outbreak of the mumps virus.

There have been more than 130 cases this year, four times the average number of cases and there's concern that not enough of the population is properly immunised.

Vaccinologist Dr Helen Petousis-Harris from Auckland University spoke to Duncan Garner.

Watch the video for the full interview.