Russia has recorded 753,000 excess deaths during the coronavirus pandemic, one of the highest tolls in the world, according to analysis of government data by the Financial Times that highlights the stark impact of the disease as the country imposes fresh restrictions to curb its spread.

The figure, used by demographers to measure the real impact of pandemics, covers the period to the end of September. It is calculated by comparing total mortality figures collected by statistics agency Rosstat since the emergence of Covid 19, with historical trends. It shows that Russia ranked second to the US in terms of absolute number of excess deaths and third behind Peru and Bulgaria on a per capita basis.

Excess deaths differ from official Covid-19-related figures published by state agencies in Russia. Rosstat publishes its own monthly Covid-19 death toll, estimating that 462,000 people had died of the respiratory disease as of the end of September. The country’s inter-agency coronavirus task force, a body including ministers and other officials designed to co-ordinate the pandemic response, attributed 203,549 deaths to the disease at the end of September.

Both agencies say they use different approaches to collect the data. The task force receives daily updates from hospitals on cases where Covid-19 was the evident primary cause of death, with no closer examinations. Rosstat gets monthly data from civil registries, which it says take into account follow-up examinations.

The health ministry did not respond to a request for comment. Rosstat said it did not comment on others’ calculations as it could not see the methodology.

Russia’s soaring death rate follows a struggle by authorities to boost its sluggish vaccination campaign and persuade people to use caution in public places.

“The population acts as if it has no idea, or it doesn’t care any more, while people have started dying like flies. It’s a catastrophe,” said independent demographer Alexey Raksha, a former Rosstat employee who lost his job after criticising the agency’s handling of Covid data. He said he expected average life expectancy to fall from 2019 levels of just above 73 years to about 69 years as a result of the pandemic.

Bars and restaurants in central Moscow were packed last Wednesday evening, the last night before the start of an Il-day “non-working week” in the capital, during which non-essential shops, schools and entertainment venues will be closed. Other regions are imposing similar measures.