Table 3.

Case fatality rate and infection fatality rate for the background population, aged 17–72 years, with no known comorbidities calculated from the RT-PCR confirmed and estimated SARS-CoV-2 infections.

	30-Day mortality (per 100,000)		60-Day mortality (per 100,000)
	CFR	IFR	CFR	IFR
Total	8.3 (6.9–10.1)	6.2 (5.1–7.5)	13.8 (11.9–16.1)	10.2 (8.8–11.9)
Gender
Women	6.4 (4.7–8.7)	4.8 (3.6–6.6)	11.0 (8.8–13.9)	8.4 (6.7–10.6)
Men	10.5 (8.2–13.4)	7.5 (5.9–9.7)	16.9 (13.9–20.5)	12.1 (10.0–14.8)
Age
17–35 years	1.9 (1.0–3.5)	1.6 (0.9–3.1)	3.0 (1.8–4.9)	2.6 (1.6–4.3)
36–50 years	4.5 (2.8–7.2)	4.1 (2.6–6.6)	6.3 (4.2–9.5)	5.8 (3.9–8.7)
51–60 years	13.0 (8.8–19.3)	7.6 (5.2–11.3)	25.0 (18.8–33.2)	14.6 (11.0–19.4)
61–72 years	40.7 (30.9–53.6)	15.1 (11.5–19.9)	66.2 (53.4–82.2)	24.6 (19.8–30.5)
Administrative Region
Capital Region of Denmark	7.0 (4.7–10.3)	5.7 (3.8–8.4)	10.9 (8.0–14.9)	8.8 (6.4–12.1)
Region Zealand	12.9 (8.3–19.9)	9.0 (5.8–14.0)	22.5 (16.2–31.3)	15.8 (11.4–22.0)
Region of Southern Denmark	9.2 (6.2–13.8)	6.6 (4.4–9.8)	14.6 (10.7–20.1)	10.4 (7.6–14.3)
Central Denmark Region	5.1 (3.1–8.3)	3.8 (2.3–6.2)	8.6 (5.9–12.5)	6.5 (4.4–9.4)
North Denmark Region	9.3 (5.4–15.9)	5.8 (3.3–9.9)	18.5 (12.6–27.2)	11.5 (7.8–16.9)

Case fatality rate (CFR) was calculated based on the SARS-CoV-2 RT-PCR test results between January 5, 2022, and March 15, 2022. The infection fatality rate (IFR) was calculated based on the seroprevalence measured in donors. To account for the differences in gender, age, and regional distribution of donors when compared to the background population (17–72 years with no known comorbidities), we weighted the estimates.