In an email sent out last night, the University of Otago said it had been notified by Public Health South about a case of meningococcal infection in North Dunedin.
The person attended a gig at U Bar last Wednesday and had visited Unipol gym, the email said.
Meningococcal is a bacterial infection that can be carried, usually harmlessly, in the nose and throat by up to 15% of people.
Te Whatu Ora Southern Public Health released a statement this afternoon saying the patient was isolating and receiving treatment.
Close contacts are being identified and treated as required.
Only a small number of people in contact with "carriers" develop meningococcal disease and it can take up to 10 days for symptoms to develop.
The bacteria passes from person to person by regular close, prolonged contact.
"While the risk of developing infection is very low, it is important to seek medical advice immediately if you develop any of the symptoms of meningococcal disease," the email said.
Meningococcal disease can be difficult to diagnose because it can show like other illnesses, such as the flu and symptoms can include a high fever, headache and sleepiness.
More specific symptoms include a stiff neck, a dislike of bright lights, vomiting, crying or a rash consisting of reddish-purple pinprick spots or bruises.
Dr Susan Jack, Te Whatu Ora Southern Public Health medical officer of health reiterated the need to seek medical attention if they develop symptoms.
"Though the risk of developing the illness is low, symptoms can come on rapidly and the infection can become significantly serious in a matter of hours. If you feel really unwell with any of these symptoms, you need to urgently seek care," Dr Jack said.
"If you are a part of the North Dunedin community and have any of these symptoms, please contact your GP, health provider, or Healthline immediately."
Vaccines do not protect against all meningococcal strains and it is important to see a doctor immediately if showing symptoms, the email says.
