Table 2.

Effectiveness of the third vaccine dose versus two vaccine doses of the BNT162b2 mRNA COVID-19 vaccine

	Vaccinated with two doses		Vaccinated with three doses		1 – risk ratio (95% CI)	Risk difference per 100 000 individuals (95% CI)
	Events	Risk per 100 000 individuals	Events	Risk per 100 000 individuals
Admission to hospital	231	220·8	29	14·4	93% (88–97)	206·4 (146·1–275·1)
Severe disease	157	158·9	17	12·9	92% (82–97)	145·9 (93·1–207·7)
Death	44	31·9	7	6·1	81% (59–97)	25·8 (13·0–38·5)

Estimates were obtained using the Kaplan-Meier estimator starting from day 7 after receipt of the third dose, in those who received it.