Table 1.

List of approved COVID-19 vaccines

S.N.	Vaccine Name	Manufacturer	Vaccine Type	Efficacy	No. of Countries Approving the Vaccine	No. of Trials in No. of Countries
1	Ad5-nCoV	CanSino	Nonreplicating viral vector	65.7% [17]	1	Six trials in six countries
2	AZD1222	Oxford/AstraZeneca/Serum Institute of India	Adenovirus vaccine	70% [18]	11	Sixteen trials in twelve countries
3	BBIBP-CorV	Sinopharm	Inactivated vaccine	86% [19]	8	Six trials in seven countries
4	BNT162b	BioNTech/Pfizer	mRNA-based vaccine	95% [20]	54	Seven trials in eight countries
5	Coronovac	Sinovac	Inactivated vaccine	Varying results in trials; 50% [21]	5	Eleven trials in five countries
6	Covaxin	Bharat Biotech	Inactivated vaccine	78% [22]	1	Five trials in one country
7	Covishield	Serum Institute of India	Adenovirus vaccine	70% [18]	4	Two trials in one country
8	EpiVac Corona	FBRI	Peptide vaccine	Not available	1	Two trials in one country
9	Verocells	Sinopharm	Inactivated vaccine	79% [23]	2	Five trials in four countries
10	mRNA-1273	Moderna, NIAID	mRNA-based vaccine	94.5% [24]	37	Five trials in one country
11	Ad26.COV2.S	Janssen	Recombinant, replication-incompetent human adenovirus type 26 vector	Severe disease: 73.1% Critical disease: 81.7% [25]	53	Eleven trials in seven countries
12	Sputnik V	Gamaleya	Adenovirus viral vector vaccine	91.6% [26]	10	Three trials in one country

mRNA messenger RNA, NIAID National Institute of Allergy and Infectious Diseases