"So say your child has been vaccinated against group C of the disease, group B is also common in New Zealand.''
Dr Nesdale said she wouldn't want anyone to have a false sense of security.
Meningococcal disease, which affects mainly infants and teenagers aged 15 to 19, is caused by bacteria spread through spit.
Thirty-eight cases were reported in the first seven months of the year according to Environmental Science and Research.
People infected with the bacteria can deteriorate rapidly and often exhibit flu-like symptoms.
Symptoms:
* Babies: Refusal of feeds, floppiness, vomiting
* Children and adults: fever, confusion, stiff neck and the appearance of a rash
* Seek help as soon as you think something is wrong
Ministry of Health Helpline: 0800 611 116