Table 1

Top 10 articles with the highest citation rates and highest Almetric Attention Scores for articles indexed in the National Institutes of Health’s iSearch Coronavirus Disease 2019 Portfolio, January 2020 to February 2021

Publication date	PMID	First author	Article title	Journal	Total citations	AAS
Top 10 articles with highest citation rates
2020-01-28	31 986 264	Huang, Chaolin	Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China	Lancet	11,403	14,215
2020-02-29	32 109 013	Guan, Wei-Jie	Clinical characteristics of coronavirus disease 2019 in China	NEJM	7893	10,360
2020-03-15	32 171 076	Zhou, Fei	Clinical course and risk factors for mortality of adult inpatients with COVID-19 in Wuhan, China: a retrospective cohort study	Lancet	6942	13,466
2020-02-08	32 031 570	Wang, Dawei	Clinical characteristics of 138 hospitalized patients with 2019 novel coronavirus-infected pneumonia in Wuhan, China	JAMA	6586	6413
2020-01-25	31 978 945	Zhu, Na	A novel coronavirus from patients with pneumonia in China, 2019	NEJM	6271	5648
2020-02-03	32 007 143	Chen, Nanshan	Epidemiological and clinical characteristics of 99 cases of 2019 novel coronavirus pneumonia in Wuhan, China: a descriptive study	Lancet	5534	4422
2020-02-06	32 015 507	Zhou, Peng	A pneumonia outbreak associated with a new coronavirus of probable bat origin	Nature	4765	6132
2020-02-25	32 091 533	Wu, Zunyou	Characteristics of and important lessons from the coronavirus disease 2019 (COVID-19) outbreak in China: summary of a report of 72 314 cases from the Chinese Center for Disease Control and Prevention	JAMA	4582	11,466
2020-01-30	31 995 857	Li, Qun	Early transmission dynamics in Wuhan, China, of novel coronavirus-infected pneumonia	NEJM	4027	7042
2020-03-07	32 142 651	Hoffmann, Markus	SARS-CoV-2 cell entry depends on ACE2 and TMPRSS2 and is blocked by a clinically proven protease inhibitor	Cell	3998	4383
Top 10 articles with highest AAS
2020-04-15	32 284 615	Andersen, Kristian	The proximal origin of SARS-CoV-2	Nature Med	1021	35,223
2020-11-19	33 205 991	Bundgaard, Henning	Effectiveness of adding a mask recommendation to other public health measures to prevent SARS-CoV-2 infection in Danish mask wearers: a randomized controlled trial	Ann Intern Med	12	28,937
2021-02-06	33 545 094	Logunov, Denis	Safety and efficacy of an rAd26 and rAd5 vector-based heterologous prime-boost COVID-19 vaccine: an interim analysis of a randomised controlled phase three trial in Russia	Lancet	0	27,639
2020-03-18	32 182 409	van Doremalen, Neeltje	Aerosol and surface stability of SARS-CoV-2 as compared with SARS-CoV-1	NEJM	2273	26 117
2020-06-05	32 497 510	Chu, Derek	Physical distancing, face masks, and eye protection to prevent person-to-person transmission of SARS-CoV-2 and COVID-19: a systematic review and meta-analysis	Lancet	481	23,966
2020-06-13	32 527 856	Zhang, Renyi	Identifying airborne transmission as the dominant route for the spread of COVID-19	PNAS USA	135	21,657
2020-11-22	33 219 229	Cao, Shiyi	Post-lockdown SARS-CoV-2 nucleic acid screening in nearly ten million residents of Wuhan, China	Nature Comm	3	20,849
2020-05-07	32 371 934	Leung, Nancy	Respiratory virus shedding in exhaled breath and efficacy of face masks.	Nature Med	394	20,847
2020-04-1	3 229 127	Kissler, Stephen	Projecting the transmission dynamics of SARS-CoV-2 through the postpandemic period.	Science	604	19,609

Retracted articles were not included in the top 10 lists.
AAS, Altmetric Attention Score; Ann Intern Med, Annals of Internal Medicine; JAMA, Journal of the American Medical Association; Nature Comm, Nature Communications; Nature Med, Nature Medicine; NEJM, New England Journal of Medicine; PMID, PubMed unique identifier; PNAS USA, Proceedings of the National Academy of Sciences of the United States of America.