June 20, 2021

to the 46,000 deaths from more than the first wave, there are already 34,000 since September

Never in Spain have more than 12,000 people died in a week … until now. At the peak of mortality of the coronavirus epidemic – between March 23 and April 5 – 20,000 people died of all causes a week in Spain for 21 consecutive days. The death toll registered is the highest in 45 years of democratic history.

An epidemic that has once again shown its effects on overmortality in the second, third and fourth waves of Covid-19. Although the records returned to speak of more deaths than expected in July and August, not all were directly attributable to COVID-19: a large part was linked to traditional summer heat episodes. However, all the data (including the official deaths recorded by Health) indicate that the excess of more than 34,000 deaths registered since the end of September is largely linked to the virus, directly or indirectly. Of this excess mortality, 18,000 come from the second wave (September to November) and the remaining 16,000 from the third wave and fourth wave (December to May).

Precisely, between January and December of last year there was an excess of 69,000 deaths above those expected in Spain. With these data, 2020 would be the deadliest year in the democratic history of Spain both in absolute numbers and adjusting for population, according to calculations made by elDiario.es.

This graph shows the result of elDiario.es analysis of the individual microdata of the more than 15 million deaths registered in Spain -from 1975 to 2019- in the death statistics of the National Institute of Statistics (INE) and the surveillance figures daily -2020 and 2021- of the Mortality Monitoring System (MoMo), of the Carlos III Health Institute (ISCIII). See methodology.

The worst mortality crisis in Spain since official records exist

Deaths in each week of every year from 1975 to the present. In black, the average from 2000 to 2019. The data from 2020 Y 2021 are an extrapolation from computerized vital records and may present delays in notifications

It must be taken into account that the mortality figures during the epidemic are an estimate with respect to the definitive statistics of deaths since the system only includes computerized civil registries –93% of the population– and the Carlos III Institute extrapolates to all the population. In addition, there may be delays in the notification of deaths in recent weeks.

Even with that, the death figures already reflect the highest mortality peak in recent history even adjusting the data by population.

How does the coronavirus epidemic compare to other spikes in mortality compared to recent years? We analyzed this by comparing the figures for 2020 and 2021 with the daily deaths from the worst flu outbreaks and heat waves of the past two decades. Select the first, second or last quarter to see each period.

The COVID-19 Crisis Compared to Worst Flu Seasons and Heat Waves

Number of daily deaths in each day compared to other years with high mortality in each trimester

The most affected communities

The differences in the impact of mortality from the coronavirus crisis are palpable between autonomous communities. Madrid, Castilla y León and Castilla-La Mancha and Catalunya were the regions most affected by the increase in deaths during the first wave of the epidemic.

They are also the areas in which the virus has acted with the greatest virulence, according to the data published by the Ministry of Health. The peaks are clear: in the Community of Madrid, deaths in the deadliest week of the epidemic quadrupled compared to the average of the last 20 years.

An increase in mortality that reached its peak in March and April, during home confinement, but which has been repeated, with less intensity, in the second wave of the coronavirus. Even so, in some communities the excess mortality since September already exceeds the figures recorded during home confinement. These are the cases of Andalusia, Murcia, Galicia, Aragon, Asturias, the Canary Islands and the Balearic Islands.

It must be taken into account that in some territories, such as Aragon, Cantabria, Castilla y León or La Rioja, the death figures are more extrapolated than in the rest of the regions because they have fewer computerized records, so the figures are an estimate less accurate than in other communities. In 2018, for example, the MoMo only registered 77% of the deaths that were registered in the provinces of Castilla-La Mancha compared to 99% in the Basque Country.

The following graph shows the comparison of the number of weekly deaths in each community with the deaths registered in the last 20 years.

The mortality of the coronavirus crisis in each autonomous community

Each point represents the deaths in each week of every year from 2000 to the present. In black, the average from 2000 to 2019. The data from 2020 Y 2021 are an extrapolation from computerized vital records and may present delays in notifications

Source: INE, MoMo (ISCII)

If you want to compare the detailed mortality data from 1975 to the present in each autonomous community, click here.

The collapse of hospitals, funeral homes and civil registries is part of an unprecedented situation in the history of Spain. The 20 days with the highest number of deaths since the beginning of democracy are all between the end of March and the beginning of April 2020, according to the deaths registered in the MoMo system.

To date, the day with the highest number of deaths had been January 13, 2017 – flu outbreak – with 1,759 deaths. On March 31 of last year, more than 3,000 people died in a single day, according to the MoMo estimate.

The peak of deaths, among older people

By age, the biggest difference between the deaths expected according to the MoMo and those officially registered is found among the oldest people. The excess of deaths among the deceased with more than 74 years is already 63% over what was expected until April 28. Between 65 and 74 years, 46%.

Unexpected mortality skyrockets among older people

Deaths in every day of 2020 in comparison with the average of previous years in each age group. Estimated data: these are an extrapolation from computerized vital records and may present delays in notifications

Less than 65 years

65 to 74 years

More than 74 years

Source: INE, MoMo (ISCII)

Many experts ask for time to find out what part of the excess mortality is attributable to the virus. In addition, the excess deaths recorded by the MoMo may also be some that are not directly attributable to COVID-19. For example, indirect deaths may have increased during the saturation of the healthcare system and other accidental deaths may have decreased during the exceptional situation of confinement.

Mortality in each Autonomous Community since 1975

To compare in more detail how the COVID-19 crisis is affecting each autonomous community, we show the evolution of weekly deaths in each region from 1975 to the present.

The figures show the total number of deaths in each week of the year registered in each autonomous community, according to the figures of the historical death statistics until 2019 and the MoMo project for 2020 and 2021. Select a community and explore the data.

Select your CCAA: mortality during the COVID-19 crisis vs every year since 1975

Deaths in each week of every year from 1975 to the present. In black, the average from 2000 to 2019. The data from 2020 Y 2021 are an extrapolation from computerized vital records and may present delays in notifications

Select a CCAA:


For this information, the individual microdata of all deaths registered in Spain between 1975 and 2019 from the National Institute of Statistics (INE) have been analyzed. For each death, the day of death and the death registration community have been identified.

1,298 deaths have been identified located on non-existent days (November 31 or February 30) between 1975 and 1983. These deaths have been included among those on the last day of those months.

The death statistics registered in Spain from January 2020 to the present come from the mortality monitoring system (MoMo), which has published historical data for the last two years. This tool is used to warn of excess deaths from heat waves or flu epidemics.

These figures are an extrapolation since the system is fed by the deaths registered in the computerized civil registries (94% of the final deaths) and the Carlos III Institute estimates deaths based on the percentage of digitized records in each community. In addition, they may present delays in notifications.

Communities with fewer computerized civil registries can estimate less accurately than the rest in their death figures relative to the definitive ones. These are the cases of Aragon (it detected 80% of the deaths finally registered in 2018), Cantabria (78%), Castilla y León (77%), Comunidad de Madrid (87%) and La Rioja (77%).


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