Table 1.

Proportion of total cases with 0, 1, 2, or ≥3 symptoms.

	% of Total Cases				Total
Age Group	0 Symptoms	1 Symptom	2 Symptoms	≥3 Symptoms	Number of Cases with Known Symptoms
0–9	35.0 ± 2.7	31.4 ± 2.6	22.3 ± 2.3	11.3 ± 1.8	1216
10–19	11.4 ± 0.9	28.0 ± 1.2	29.5 ± 1.2	31.1 ±1.2	5276
20–29	6.6 ± 0.4	22.4 ± 0.7	27.9 ± 0.8	43.0 ± 0.9	12,458
30–39	6.8 ± 0.5	21.3 ± 0.9	27.3 ± 0.9	44.6 ± 1.1	8562
40–49	7.6 ± 0.6	21.8 ± 0.9	27.2 ± 1.0	43.5 ± 1.1	7341
50–59	7.8 ± 0.6	20.8 ± 1.0	27.7 ± 1.1	43.7 ± 1.2	6829
60–69	8.8 ± 0.9	21.6 ± 1.3	27.8 ± 1.4	41.8 ± 1.6	3818
70–79	15.2 ± 1.8	24.2 ± 2.2	24.9 ± 2.2	35.6 ± 2.4	1522
80–89	31.2 ± 3.1	20.1 ± 2.7	25.8 ± 2.9	22.9 ± 2.8	877
≥90	42.2 ± 4.7	18.9 ± 3.7	24.0 ± 4.0	14.9 ± 3.4	429