East-West mortality disparities during the COVID-19 pandemic widen the historical longevity divide in Europe.

IntroductionFor over half a century, life expectancy in the former communist countries of Eastern Europe has been noticeably lower than in Western Europe. Since 2000 this gap has narrowed. We examined the impact of the COVID-19 pandemic on these long-term mortality trends and differences. MethodsNationally reported mortality data were used to estimate East-West differences in excess mortality and life expectancy losses. Regression and decomposition methods were employed to examine the contribution of vaccination, trust in government, regulatory enforcement, and air connectivity between populations to these differences. ResultsDuring the pandemic, the East-West life expectancy gap widened to its highest level in more than two decades. Moreover, the trajectory of excess mortality during the pandemic differed between East and West, with levels of excess mortality in the East being minimal until autumn 2020. Cumulative excess mortality in weeks 10-18 of 2020 was correlated with an index of air connectivity, which was appreciably lower in Eastern compared to Western European countries in the immediate pre-pandemic period. From October 2020 onwards, the East suffered greater losses in life expectancy, especially in 2021. This could not be explained by greater frailty of the Eastern European populations, as indicated by higher pre-pandemic mortality levels. Half of the difference between East and West in 2021 was jointly explained by COVID-19 vaccination levels and trust in government. ConclusionsEast-West contrasts in the timing and magnitude of life expectancy losses during the COVID-19 pandemic appear to have their ultimate origins in differences between societies that were established during the Cold War. These include differences in the connectivity of populations, levels of trust in science and authorities and the related capacity of Eastern countries to mount effective vaccination campaigns.