Table 1 Frequency of symptoms reported during illness by virus type [95% confidence interval].
Characteristic | Overall, N = 11,7661 | Wild-type, N = 262 [95% CI]1,2 | Alpha, N = 445 [95% CI]1,2 | Delta, N = 1,640 [95% CI]1,2 | Omicron BA1, N = 2,282 [95% CI]1,2 | Omicron BA2, N = 4,012 [95% CI]1,2 | Omicron BA5, N = 2,345 [95% CI]1,2 | Influenza, N = 222 [95% CI]1,2 | Rhinovirus, N = 283 [95% CI]1,2 | RSV, N = 84 [95% CI]1,2 | Seasonal CoV, N = 191 [95% CI]1,2 |
|---|---|---|---|---|---|---|---|---|---|---|---|
Sore throat | 57% | 40% [34, 46] | 39% [34, 43] | 43% [40, 45] | 53% [51, 55] | 62% [61, 64] | 65% [63, 66] | 72% [65, 77] | 81% [76, 86] | 58% [47, 69] | 72% [65, 78] |
Cough | 74% | 65% [58, 70] | 60% [55, 65] | 65% [63, 67] | 61% [59, 63] | 79% [78, 81] | 81% [79, 82] | 91% [86, 94] | 87% [83, 91] | 83% [73, 90] | 79% [72, 84] |
Runny nose | 64% | 35% [30, 42] | 36% [31, 40] | 57% [54, 59] | 57% [55, 59] | 71% [69, 72] | 63% [61, 65] | 89% [84, 93] | 93% [89, 96] | 88% [79, 94] | 95% [91, 98] |
Sneezing | 55% | 36% [30, 42] | 37% [32, 42] | 47% [44, 49] | 49% [47, 51] | 60% [59, 62] | 55% [53, 57] | 76% [70, 81] | 90% [86, 94] | 77% [67, 86] | 90% [84, 93] |
Fever | 20% | 23% [18, 28] | 24% [20, 29] | 23% [21, 25] | 14% [12, 15] | 14% [13, 15] | 19% [18, 21] | 74% [67, 79] | 47% [41, 53] | 38% [28, 49] | 51% [44, 59] |
Headache | 64% | 67% [61, 73] | 65% [60, 69] | 65% [63, 67] | 61% [59, 63] | 62% [60, 63] | 66% [64, 68] | 78% [72, 83] | 73% [68, 78] | 57% [46, 68] | 68% [61, 75] |
Fatigue | 64% | 71% [65, 77] | 62% [57, 66] | 64% [62, 67] | 57% [55, 59] | 68% [66, 69] | 72% [70, 74] | 54% [47, 60] | 28% [23, 33] | 60% [48, 70] | 10% [6.7, 16] |
ARI3 | 87% | 78% [73, 83] | 76% [71, 80] | 81% [79, 83] | 80% [79, 82] | 91% [90, 91] | 90% [89, 91] | 99% [96, 100] | 99% [97, 100] | 100% [95, 100] | 99% [97, 100] |
ILI4 | 14% | 17% [13, 22] | 17% [13, 20] | 17% [15, 19] | 8.7% [7.6, 9.9] | 12% [11, 13] | 16% [15, 18] | 49% [42, 55] | 12% [8.3, 16] | 20% [13, 31] | 12% [7.5, 17] |
Age | |||||||||||
0–15 | 11% | 8.4% [5.5, 13] | 9% [6.6, 12] | 23% [21, 25] | 15% [14, 17] | 4.5% [3.9, 5.2] | 3.2% [2.5, 4.0] | 43% [36, 50] | 19% [15, 25] | 36% [26, 47] | 20% [15, 26] |
16–44 | 19% | 35% [29, 41] | 37% [33, 42] | 27% [25, 29] | 23% [22, 25] | 14% [13, 16] | 9.6% [8.4, 11] | 23% [17, 29] | 29% [24, 34] | 16% [9.2, 26] | 29% [23, 36] |
45–64 | 39% | 35% [30, 42] | 38% [33, 43] | 35% [33, 37] | 35% [33, 37] | 41% [40, 43] | 43% [41, 45] | 29% [23, 36] | 36% [30, 42] | 30% [20, 41] | 38% [31, 45] |
65 + | 32% | 21% [16, 27] | 16% [13, 20] | 15% [14, 17] | 26% [24, 28] | 40% [38, 41] | 45% [42, 47] | 5.5% [3.0, 9.6] | 16% [12, 21] | 19% [11, 29] | 14% [9.2, 19] |
Missing | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 0 |
Proportion | 100% | 2.2% | 3.8% | 14% | 19% | 34% | 20% | 1.9% | 2.4% | 0.7% | 1.6% |
