People, some wearing face masks to prevent the spread of the coronavirus, enjoy the sun in an outside seating area in Luxembourg gardens, in Paris. Photo / AP
By Ilan Noy and Nguyen Doan – Victoria University of Wellington
What have we lost because of the pandemic? According to our calculations, a lot — and many of the worst hit countries and regions are far from world media attention.
Typically, damage from any disaster is measured in separate categories: the number of fatalities and injuries it caused, and the financial damage it led to (directly or indirectly).
Only by aggregating these various measures into a comprehensive total can we begin to formulate a fuller picture of the burden of disasters, including pandemics.
They do this based on surveys asking people how much they are willing to pay to reduce some risk (for example, improve a road they often use), or by calculating the additional compensation people demand when they take on high-risk occupations (for example, as a diver on an oil rig).
By observing the amount of money people associate with small changes in mortality risk, one can then calculate the overall price of a “statistical life” as valued by the average person.
By adding the dollar value of asset damage to the “priced” value of life lost (or injured), the overall cost of an adverse event (such as an earthquake or an epidemic) can be calculated.
Calculating ‘lost life years’
But “value of life” prices can vary a lot between and even within countries. There is also an understandable public distaste for putting a price tag on human life. Governments typically don’t openly discuss these calculations, making it difficult to assess their legitimacy.
An alternative is a “life years lost index“. It is based on the World Health Organization (WHO) measure of “disability-adjusted life years” (DALY), calculated for a long list of diseases and published in a yearly account of the associated human costs.
In conventional measurements of the impact of disaster risk, the unit used is dollars. For this alternative index, the unit of measurement is “lost life years” — the loss of the equivalent of one year of full health.
This is a sum of three key measures of the pandemic’s impact: lost life years because of death and sickness from the disease, and the equivalent lost years due to decline in economic activity. The map below presents these figures per person, in order to enable the relevant comparison across countries.
For example, in the map above we see Australia has a life-years-lost figure of 0.02. This means, on average, every person in Australia lost just over seven life days from the pandemic. In New Zealand, where fewer people died and there have been only a few thousand cases, the figure is 0.01, meaning each person lost fewer than four life days.
In India, by contrast, the average person lost nearly 15 days and in Peru the equivalent figure is 25 days. That loss is based on a combination of the precipitous recession and the death and sickness caused by the virus directly.
So, how do we put this in context? Is losing 25 days a catastrophic loss that justifies the kinds of public actions we have observed around the world? We can answer that question by comparing the impact of Covid-19 to other disasters.
The price of a pandemic
When we compare the total aggregate costs of the Covid-19 pandemic in 2020 with the average annual costs associated with all other disasters in the previous 20 years, we find the pandemic has indeed been extremely costly (in terms of lost life years).
This is despite those past two decades having seen many catastrophic events: horrific tsunamis in Indonesia (2004) and Japan (2011), very damaging hurricanes in the US (2005 and 2017), a high-mortality cyclone in Myanmar (2008), deadly earthquakes in India (2001), Pakistan (2005), China (2008), Haiti (2010) and Nepal (2015), and others.
The graph below shows the life years lost in 2020 by continent, per person, from Covid-19 compared to the average annual cost of all other disasters 2000-2019. As we can see, the costs of the pandemic are much higher — more than three times higher in Asia and more than 30 times higher in Europe.