When governments around the world confronted a fast-moving public-health crisis during the early stages of the pandemic, officials faced the immediate challenge of measuring viral spread and communicating its severity to the public. But a new study reveals that official data frequently failed to reflect reality suggesting widespread discrepancies in international public health records.
Excess Mortality Exposes Wide Gaps in Official Figures
Ariel Karlinsky of Hebrew University and Prof. Moses Shayo of Hebrew University and King’s College London assembled mortality data from 134 countries and territories, drawing figures directly from national statistical offices, population registries, and health ministries. While governments documented 5.08 million deaths globally across 2020 and 2021, the researchers calculated that actual Covid mortality reached 12.47 million.
The analysis demonstrates that roughly 45% to 55% of governments misreported their mortality data. Underreporting proved far more common than overreporting. To ensure accuracy, the researchers utilized excess mortality as an independent benchmark, examining deaths above normal expected levels rather than relying solely on diagnoses that could be skewed by testing availability. Across 134 countries and territories, an estimated 45%–55% of governments misreported Covid mortality, with underreporting far more common than overreporting.
Importantly, the researchers do not assume that every reporting gap represents deliberate manipulation. Countries differ in their ability to diagnose illness, register deaths and maintain reliable statistical systems. The study therefore examines whether differences in state capacity can explain the discrepancies.
Institutional Strength Directs Reporting Reliability
Discrepancies in official counts cannot be attributed simply to a country’s basic statistical capacity or its ability to register deaths. The authors examined state capacity and found it accounted for only a small fraction of the variation observed across nations. Capacity explains only a small share of the variation.
Instead, institutional constraints played a primary role. Countries featuring stronger institutional checks and balances exhibited significantly lower levels of underreporting. Misreporting is also lower where citizens are better positioned to evaluate official information, measured through factors including education and internet access. Accurate reporting also correlated with higher levels of citizen education and internet access, which positioned the public to evaluate official information more effectively. Furthermore, the authors observed higher misreporting rates in nations holding elections during the pandemic and in countries carrying a communist legacy, although they emphasize that these relationships are descriptive and do not establish causation.
The broader finding is that incentives to present information favorably may exist in many political systems. What appears to matter is whether governments face effective institutional and social checks that make inaccurate information easier to detect and challenge.
Implications for Global Policy and Information Verification
Covid offered researchers an unusual opportunity: governments around the world confronted a broadly comparable crisis at roughly the same time. The findings carry consequences that stretch far beyond health statistics. Official figures routinely guide major decisions involving economic growth, foreign aid, public health mandates, and international travel restrictions. During Covid, reported figures also influenced international decisions, including travel restrictions.
The study argues that inaccurate official information can therefore have consequences far beyond the country producing it, complicating international efforts in areas such as foreign aid, climate action and vaccination campaigns. Inaccurate reporting can distort these efforts, complicating international cooperation in climate action, vaccination campaigns, and economic development.
This question has become even more relevant in today’s fast-moving information environment, where misleading claims can spread rapidly through digital platforms and AI-generated content. These vulnerabilities remain highly relevant in modern digital information environments, where unverified claims propagate rapidly through online platforms. The research highlights that official statistics do not need to be dismissed automatically, but rather that societies require robust systems capable of independently verifying, challenging, and correcting public data.
