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Table 2 Patient data categorized by the date of confirmation

From: Estimating the daily trend in the size of the COVID-19 infected population in Wuhan

Date of confirmation Imported cases
(n = 3039)
Local Cases
(n = 3864)
Proportiona No information
(n = 4037)
Total cases
(n = 10 940)
Onset to detection (days)
≤ 20 Janb 23 1 96% 2 26 8.83
21 Jan 35 3 92% 7 45 8.60
22 Jan 55 6 90% 16 77 6.11
23 Jan 117 15 89% 52 184 5.37
24 Jan 165 18 90% 92 275 4.56
25 Jan 210 38 85% 110 358 4.15
26 Jan 198 49 80% 163 410 4.05
27 Jan 190 85 69% 208 483 5.00
28 Jan 283 104 73% 252 639 5.58
29 Jan 299 144 67% 280 723 5.43
30 Jan 291 214 58% 260 765 5.13
31 Jan 256 239 52% 308 803 5.05
1 Feb 160 252 39% 266 678 4.83
2 Feb 159 310 34% 269 738 5.55
3 Feb 164 410 29% 322 896 5.76
4 Feb 119 336 26% 294 749 5.99
5 Feb 107 376 22% 266 749 6.10
6 Feb 83 380 18% 258 721 5.92
7 Feb 53 363 13% 201 617 6.17
8 Feb 42 286 13% 202 530 6.49
9 Feb 30 235 11% 209 474 6.66
  1. a The proportion is the number of imported cases divided by the sum of imported and local cases
  2. b The count and average on the first row are taken over all cases confirmed by January 20, 2020