A warning about meningococcal disease has been issued by the Canterbury District Health Board (CDHB), after three young children were diagnosed with the illness.
"It's really important to recognise the signs and symptoms as early as possible because, if left too late, the disease can cause death or permanent disability, such as deafness," say Dr Ramon Pink, Canterbury's medical health officer.
"It can affect anyone but it's more common in children under the age of five, teenagers, and young adults.
"Students in their first year of tertiary education living in student accommodation may also be at higher risk."
While antibiotics are available, early treatment is the best chance of survival.
"If you notice any of the symptoms of meningococcal disease or have any other concerns phone your general practice team, even if you have already been seen by a health professional," he says.
"You can call your usual general practice number 24/7 for care around the clock.
"You're better to be safe than sorry. Make sure you seek medical advice early."
A public health alert was issued in south Auckland in September, after two people in a church congregation were diagnosed with the disease.
Symptoms of meningococcal disease can come on rapidly, and include:
Fever, usually higher than 38°C
Nausea and vomiting
Headache
Sensitivity to light
Neck pain or stiffness
Muscle or leg pain
Confusion or reduced level of consciousness
Cold hands and feet
Abnormal skin tone - possibly pale or blotchy
A rash
In infants, additional symptoms and signs can include:
Poor feeding or not waking for feeds
Irritability or a high-pitched cry
Bulging fontanelle (soft spots on a baby's skull)
Neck retraction with back arching
Fever with cool extremities (hands and feet)
Newshub.