Results for one of two suspected of having coronavirus in New Zealand comes back negative

There are no new coronavirus cases in New Zealand.

Prime Minister Jacinda Ardern has confirmed that the results for one of two people suspected of having coronavirus in New Zealand returned negative.

It follows an announcement by the Ministry of Health's Director-General of Health Dr Ashley Bloomfield on Monday that two people fulfilled the travel criteria and have symptoms consistent with COVID-19.

"The two tests that the Director-General has referred to, one has come back and it has come back negative," Ardern told reporters on Tuesday. "But as a general rule of thumb, I'll leave it to our health officials to share that information."

Dr Bloomfield confirmed there are no new cases of the virus. 

The results for the second person who fits the definition of a suspected case are expected later on Tuesday, said Dr Bloomfield.

He said the chances of a widespread community outbreak are low but more cases are expected.

"We've had our one positive test - but we are expecting sporadic cases."

Bloomfield said 155 tests have been completed and 31 people are currently being tested.

There have been no more suspected cases in the last 24 hours. 

Dr Michelle Balm, the clinical leader for infection services at Capital and Coast District Health Board, said the policy not to test people who are not showing symptoms will continue.

"Nobody wants to miss the first COVID-19 case in the region," she said.

"But it is not a good idea to test asymptomatic patients."

Testing patients who are not showing symptoms will likely result in a false negative.

Dr Balm confirmed there is no rationing for COVID-19 tests and DHB's have the capacity to perform "hundreds" of tests a day. 

If you think you have contracted the virus then it's crucial to call before turning up to a hospital or doctor's office. If you turn up unannounced and are infected, then it could swiftly overwhelm the health care system, said Dr Balm.