COVID-19
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Disclaimer
The graphs and information on this page are meant to provide further clarity to readers on the COVID-19 situation in New Zealand. Our data is sourced from the Ministry of Health NZ’s webpage here. We should note that the information updates at 9am and 1pm NZT.
Though we believe the interpretations we make will be representative of the data (and an accurate representation of the current NZ situation) the information and conclusions that are formed from the data should not be relied upon as it is subject to many external factors. These factors include but are not limited to: information recording delays, extent of testing and quality of information released by the Ministry of Health NZ and the specific origin of infection.
Parameters: New Cases is defined as those COVID-19 infection cases within the last 7 days. This period has been chosen as the World Health Organisation assessment suggest between 2-10 days, 7 days being chosen as an approximate average figure for symptoms to show.
DHB are separated per location per the Ministry of Health’s map here.
Editor’s Note: 2 April 2020 – These graphs cannot be viewed on a mobile phone due to sizing issues and no commentary has been applied to the infographics below.
Graphs and dissection by various factors
Current Cases by DHB
The graph illustrates the distribution of old vs new cases by DHB. New Cases is defined as those COVID-19 infection cases within the last 7 days. It only details how many new cases are appearing in each DHB giving an indication but not a conclusive representation of the local virus spread or current controls in place.
Travel history infected by DHB
The graph illustrates the previous travel history of those infected with COVID-19. It is important to note this graph does not conclusively confirm where the infected contracted the disease overseas. Rather it is an indicator of whether the infected had direct overseas contact.
Last country infected persons travelled from
The graph illustrates the last country those who had travelled overseas had come from. It is important to note this graph does not conclusively confirm whether the infected contracted the disease overseas nor whether the countries listed above are the source of infection.
Age Distribution of Infected
This graph shows the age distribution of those who were infected for all infected persons.
Age Distribution of Locally Infected (by DHB)
This graph shows the age distribution of those who were locally infected by each DHB. A parameter of this model is it includes all infected except those who have indicated they have travelled overseas (ie it includes those who have not travelled overseas as well as those unspecified and unknown).
Analysis – Case growth rate
The purpose of these graphs is to give insight as to the rate of spread and whether the controls are currently working. Explanation of some attributes of this graph are:
- Comparison – The numbers are at a logarithimic scale, allowing comparison of growth in different districts with different total cases.
- Change – Biological epidemics tend to grow at an exponential rates, which by definition is the comparison of new and total cases, thus a timeline is not used.
A good video summarising the statistical basis for this is here.
Total Cases v New Cases – New Zealand
This graph shows the proportion of New Cases vs Total Cases in New Zealand. New Cases is defined as those COVID-19 infection cases within the last 7 days.
New Cases vs Total Cases per each DHB
This graph shows the proportion of New Cases vs Total Cases per each DHB. New Cases is defined as those COVID-19 infection cases within the last 7 days.