Table 1.

TOP10 productive countries and institutions regarding the research on application of lipid nanoparticles in mRNA vaccines.

Rank	Country	Centrality	Count	ACI	H-index	Institution	Centrality	Count	ACI	H-index
1	USA	0.07	1368	50.22	115	HARVARD UNIVERSITY	0.04	160	67.53	42
2	China	0.00	487	17.29	47	UNIVERSITY OF CALIFORNIA SYSTEM	0.01	121	37.25	29
3	Italy	0.23	454	14.73	40	HARVARD MEDICAL SCHOOL	0.00	115	65.64	33
4	Germany	0.06	404	65.55	63	TEL AVIV UNIVERSITY	0.00	112	62.38	37
5	Japan	0.00	322	8.11	20	UNIVERSITY OF PENNSYLVANIA	0.02	107	75.05	36
6	England	0.10	246	94.01	54	SACKLER FACULTY OF MEDICINE	0.00	103	61.52	34
7	Canada	0.07	190	28.74	36	UDICE FRENCH RESEARCH UNIVERSITIES	0.01	95	23.41	23
8	Israel	0.06	164	66.23	45	JOHNS HOPKINS UNIVERSITY	0.00	92	127.99	30
9	Spain	0.04	161	10.13	23	NATIONAL INSTITUTES OF HEALTH NIH USA	0.00	88	88.66	34
10	France	0.30	158	20.56	30	UNIVERSITY OF LONDON	0.03	87	67.85	33

ACI, average citations per item; USA, the United States of America.