Table 1.

Efficiency of the Sputnik V vaccine to prevent severe forms of COVID-19 with confidence intervals. Data obtained in Moscow in July 2021.

Age, Years	Control Group—Unvaccinated			Control Group—Seronegative			CI 95% of Both Control Groups
	VE%	CI 95%		VE%	CI 95%
		Lower	Upper		Lower	Upper	Lower	Upper
18–50	89	81	94	93	88	96	81	96
51–70	76	70	81	84	80	87	70	87
70+	42	32	51	63	56	69	32	69

VE, vaccine effectiveness; CI, confidence interval. The EpiVacCorona vaccine is not effective.