Table 7.

The top ten prolific institutions in the production of COVID-19 research 

Ranking	31 December 2020 Documents published, Research Institutions/Affiliations	N	%	6 June 2021, Documents published Research Institutions/Affiliations	N	%
1	Harvard Medical School, USA	1422	15.56	Harvard medical school	2325	15.76
2	Huazhong University of Science and Technology, China	1111	12.16	Huazhong University of Science and Technology	1591	10.78
3	Tongji Medical College, China	1056	11.56	University of Toronto	1579	10.70
4	The Institut national de la santé et de la recherche médicale, INSERM, the French National Institute of Health and Medical Research	983	10.76	INSERM, France	1508	10.22
5	University of Toronto, Canada	908	9.94	Tongji Medical College	1477	10.01
6	Università degli Studi di Milano, Italy	776	8.49	University of Oxford	1395	9.45
7	University of Oxford, England	761	8.33	University College London	1289	8.74
8	Università di Roma la Sapienza, Italy	755	8.26	Imperial College London	1223	8.29
9	University College London, England	704	7.71	Università degli Studi di Milano	1209	8.19
10	Massachusetts General Hospital, USA	660	7.22	Università di Roma La Sapienza	1159	7.85
	Total	9136	100.00		14,755	100.00