COVID-19: Significant clusters

A significant COVID-19 cluster is when there are ten or more cases connected through transmission and who are not all part of the same household. The cluster includes both confirmed and probable cases. 

Last updated 1:00 pm, 10 October 2020

Public health staff quickly follow up confirmed cases as soon as they are identified. Following up confirmed cases quickly and isolating close contacts works to contain clusters and prevent the disease spreading any further. All clusters are being investigated and managed by public health officials. 

There is currently one open cluster in New Zealand, currently known as the ‘Auckland August cluster’. Data specific to this cluster is available below.

Auckland August cluster – cases by age, as at 10 October 2020
Age Group Number of Cases Percent of Cases
0 to 9 23 13%
10 to 19 38 21%
20 to 29 30 17%
30 to 39 26 15%
40 to 49 25 14%
50 to 59 23 13%
60 to 69 8 4%
70+ 6 3%
Total 179 100%
Auckland August cluster – cases by ethnicity, as at 10 October 2020
Ethnicity* Number of Cases Percent of Cases
Māori 40 22%
Pacific Peoples 109 61%
Other 30 17%
Total 179 100%

Note: Prioritised ethnicity classification is used for reporting purposes. Each case is allocated to a single ethnic group based on the ethnic groups they have identified with, which are, in order of priority: Māori, Pacific Peoples, Asian, MELAA (Middle Eastern / Latin American / African) and European/Other. This means that if a person identifies as being Māori and New Zealand European, the person is counted as Māori.

Data on all New Zealand clusters, as at 10 October 2020
Cluster under investigation Location Total to date New cases in last 24 hours Current active cases Origin Status*
Auckland August cluster Auckland 179 0 0 Under investigation Open
Wedding Bluff 98 0 0 Overseas exposure Closed
Marist College Auckland 96 0 0 Unknown Closed
Hospitality Venue Matamata 77 0 0 Overseas exposure Closed
Aged residential care facility (1) Christchurch 56 0 0 Unknown Closed
Aged residential care facility (1) Auckland 51 0 0 Unknown Closed
Private Function Auckland 40 0 0 Unknown Closed
World Hereford Conference Queenstown 39 0 0 Overseas exposure Closed
Community Auckland 30 0 0 Unknown Closed
Ruby Princess Cruise Ship Cluster Hawke’s Bay 24 0 0 Overseas exposure Closed
Aged residential care facility (2) Christchurch 19 0 0 Unknown Closed
Group travel to US Wellington 16 0 0 Overseas exposure Closed
Group travel to US Auckland 16 0 0 Overseas exposure Closed
Aged residential care facility Waikato 15 0 0 Overseas exposure Closed
Community Christchurch 14 0 0 Overseas exposure Closed
Aged residential care facility (2) Auckland 13 0 0 Overseas exposure Closed
Wedding Wellington 13 0 0 Overseas exposure Closed

* The criteria for determining transmission of a cluster to be closed has been reviewed and updated:

  • A cluster is considered closed when there have been no new cases for two incubation periods (ie, 28 days) from the date when all cases complete isolation.
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