SUPPLEMENTARY TABLE 1. Comparison of age groups of SARS-CoV-2 cases investigated at LACEN-RS and RS during 2020.

					LACEN SAMPLES TESTED				RS INVESTIGATED CASES
Age (y)	Pos	Neg	Total	R	PR (%)	Rate (95%CI)	Pos	Neg	Total	R	PR (%)	Rate (95%CI)
Under 1	30	493	523	12	5.7	23.30 (20.95, 25.01)	1,924	7,788	9,712	12	19.8	1.50 (0.69, 2.28)
1-4	278	1,652	1,930	9	14.4	14.60 (12.94, 16.12)	6,857	37,916	44,773	9	15.3	6.00 (5.66, 6.33)
5-9	251	1,246	1,497	10	16.8	12.20 (10.20, 14.03)	7,896	38,449	46,345	11	17.0	4.30 (3.95, 4.64)
10-14	205	828	1,033	11	19.8	9.20 (6.64, 11.53)	9,255	38,107	47,362	10	19.5	1.80 (1.44, 2.16)
15-19	689	2,476	3,165	8	21.8	7.20 (5.70, 8.63)	19,490	85,021	104,511	6	18.6	2.70 (2.46, 2.94)
20-29	4,140	13,199	17,339	2	23.9	5.10 (4.40, 5.78)	96,843	407,543	504,386	2	19.2	2.10 (1.98, 2.22)
30-39	5,425	15,460	20,885	1	26.0	3.00 (2.34, 3.65)	117,425	446,494	563,919	1	20.8	0.50 (0.38, 0.62)
40-49	4,857	11,389	16,246	3	29.9	0.90 (0.15, 1.65)	95,789	342,097	437,886	3	21.9	0.60 (0.47, 0.73)
50-59	5,202	9,883	15,085	4	34.5	5.5 0(4.70, 6.31)	77,001	249,250	326,251	4	23.6	2.30 (2.14, 2.45)
60-69	4,408	7,755	12,163	5	36.2	7.20 (6.31, 8.10)	49,300	149,142	198,442	5	24.8	3.50 (3.30, 3.70)
70-79	3,244	5,956	9,200	6	35.3	6.30 (5.29, 7.32)	24,191	71,814	96,005	7	25.2	3.90 (3.62, 4.18)
≥ 80	2,412	5,802	8,214	7	29.4	0.40 (-0.61, 1.43)	12,632	40,824	53,456	8	23.6	2.30 (1.94, 2.66)
Total	31,141	76,139	107,280	-	29.0	-	518,603	1,914,445	2,433,048	-	21.3	7.70 (7.42, 7.98)

PR: positivity rate; R: ranking from highest to lowest number of samples/cases tested/investigated; y: years; CI: Confidence Interval.