Table 1.

Summary of coronavirus disease 2019 vaccines

Corporation	Vaccine	Mechanism	Vaccination Group: Number of cases/number of vaccinations (%)	Invaccination Group: Number of cases/number of vaccinations (%)	Efficacy % (95%CI)
Pfizer-BioNTech[18]	BNT162b2	mRNA	8/21720 (0.037)	162/21728 (0.746)	95.0 (90.3-97.6)
Moderna[20]	mRNA-1273	mRNA	11/15210 (0.072)	185/15210 (1.216)	94.1 (89.3-96.8)
Oxford-AstraZeneca[25]	ChAdOx1 nCoV-19 (AZD122)	Vector	27/4440 (0.608)	71/4455 (1.594)	62.1 (41.0-75.7)
Johnson & Johnson[26]	Ad26.COV2.S	Vector	433/19113 (2.265)	883/18924 (4.666)	52.9 (47.1-58.1)
Sinovac Life Science[29]	Corona Vac	Inacctivated	9/6559 (0.137)	32/3470 (0.922)	83.5 (65.4–92.1)