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. 2021 Jul 3;13(4):379-381.
doi: 10.1093/inthealth/ihaa088.

A disparity in the number of studies related to COVID-19 and SARS-CoV-2 between low- and middle-income countries and high-income countries

Takuma Usuzaki  1 , Shuji Chiba  2 , Minoru Shimoyama  1 , Mami Ishikuro  3   4 , Taku Obara  3   4   5
Affiliations
Free PMC article

A disparity in the number of studies related to COVID-19 and SARS-CoV-2 between low- and middle-income countries and high-income countries

Takuma Usuzaki et al. Int Health. .
Free PMC article

Abstract

Background: There may be a difference in the number of articles about COVID-19 and SARS-CoV-2 between low- and middle-income countries (LMICs) and high-income countries (HICs).

Methods: We analyzed authors' affiliations from 36 432 articles related to COVID-19 and SARS-CoV-2. We introduced logarithmic density and compared the number of articles and logarithmic density of LMICs with those of HICs.

Results: The number of articles and the logarithmic density of LMICs were lower than those of HICs (p<0.0001 for both).

Conclusions: There was a disparity in the number of articles related to COVID-19 and SARS-CoV-2 between LMICs and HICs.

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