COVID-19 two week forecastfor New Zealand

How many active cases will there be
based on the recent daily growth?
Robinson projection of New Zealand.

Active case forecast -
Thursday, April 15

Yesterday's
active cases

101

Recent
growth rate*

5.9%

Doubling
time

12.1 days

2 week
forecast

~200

Yesterday, there were 101 active cases in New Zealand. Over the last week active cases grew by an average of 5.9% every day. At this rate, the number of active cases double every 12.1 days, and in two weeks there would be ~200 active cases (a 121% increase compared to yesterday's active cases).

Your efforts to isolate yourself and slow the spread of the virus matter!

The chart shows total active cases each day. If the day-to-day change seems low, note that the 'new' cases were reduced by those who recovered or died.

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What does this really mean?

This forecast for New Zealand describes how many active cases the country will have in 2 weeks if the recent growth rate* remains the same.

To "flatten the curve" for our healthcare workers we must get the wiggly line on the left (the daily growth in active cases), below zero. Only when the growth rate is negative have we even begun to recover. Even when the growth rate is below zero, we cannot back off on our efforts to suppress the virus, or it will resurge. We cannot cheat it.

If these numbers seem surprisingly large, I encourage you to read more about the math used to build this forecast.

* The Recent Growth Rate is the 7-day average (mean) in the daily growth of active cases over the most recent 9 days, dropping the highest and lowest values over that period. This smooths out anomalous spikes or drops in the daily numbers, caused when countries have to suddenly revise their numbers based on new methodologies or testing.