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Table 1 Clinical, biological, and epidemiological features of the 27 SARS-CoV-2 confirmed cases, Creil, February–March 2020

From: Lessons learned from the investigation of a COVID-19 cluster in Creil, France: effectiveness of targeting symptomatic cases and conducting contact tracing around them

Clinic Biology Epidemiology
RT-PCR Serology
Case Age Symptoms Date of symptoms Symptoms duration (day) Results interpretation Ct IP2 Ct IP4 ELISA EuroImmun IgG/IgA Roche Titer of viro neutralisation Results interpretation Work place Desk room number in MSFAC Main contact with Serial interval (day) Incubation (day)
1 30–39 yes 03/02/20 NA pos 37 34 ND ND ND ND City of Crépy-en-Valois Index case
2 20–29 yes 05/02/20 3 pos 39 32 6.07/3.7 80.15 1/40 pos MSFAC A Case 1 2 4
3 50–59 yes 05/02/20 5 ND ND ND 1.33/1.4 0.9 1/40 pos MSFAC H Case 2 0 1
4 30–39 yes 07/02/20 20 pos 36 33 10.8/9.3 27.14 1/160 pos MSFAC A Case 2 2 2–4
5 50–59 yes 08/02/20 24 pos NA NA 10.9/9.4 15.79 1/160 pos MSFAC B Case 2 3 4–5
6 20–29 yes 08/02/20 NA pos 36 34 ND ND ND ND MSFAC A Case 2 3 4–5
7 50–59 yes 10/02/20 NA pos NA NA ND ND ND ND MSFAC A Case 2 5 6–7
8 40–49 yes 11/02/20 5 neg NA NA 8.04/1.6 77.94 1/80 pos MSFAC C Case 7 1 1
9 30–39 yes 11/02/20 6 pos NA NA 9.93/5 112.7 1/80 pos MSFAC F Case 6 3 4
10 50–59 yes 13/02/20 23 pos NA NA > 13/6.7 80.29 1/160 pos MSFAC D Case 7 3 2–3
11 20–29 yes 14/02/20 21 pos 33 32 4.21/1 50.48 1/40 pos MSFAC E Case 3 9 4
12 30–39 yes 14/02/20 11 ND ND ND 4.71/2.9 53.18 < 1/40 pos MSFAC F Case 9 3 1–4
13 40–49 yes 15/02/20 18 ND ND ND 1.13/0.9 4.5 1/40 pos MSFAC G Case 5 7 8
14 40–49 yes 16/02/20 18 pos NA NA > 13/> 9 66.86 1/160 pos Other facility Case 8 5 1–5
15 40–49 yes 17/02/20 9 pos 37 33 ND ND ND ND Other facility Case 14 1 1
16 40–49 yes 18/02/20 26 ND ND ND 3.2/1 18.95 1/40 pos MSFAC H Case 11 4 4–6
17 50–59 yes 19/02/20 NA pos NA NA ND ND ND ND MSFAC I Case 5 11 2
18 50–59 yes 20/02/20 13 pos NA NA 11.3/2.1 15.91 1/80 pos MSFAC I Case 17 1 2
19 20–29 yes 21/02/20 6 pos NA NA 4.42/1.8 91.23 1/40 pos MSFAC D Case 10 8 9–10
20 40–49 yes 21/02/20 16 pos NA NA 1.78/2.7 1.5 1/40 pos MSFAC I Case 17 2 2
21 30–39 yes 24/02/20 12 pos 37 34 12.8/ > 10 130 1/80 pos MSFAC J Case 10 11 10
22 40–49 yes 25/02/20 20 pos 22 21 7.84/3.7 96.35 1/40 pos MSFAC K Case 20 4 1–5
23 40–49 yes 25/02/20 2 ND ND ND 5.97/3.9 38.09 1/80 pos MSFAC L Case 10 12 11
24 30–39 yes 10/03/20 5 ND ND ND 6.39/> 10 14.51 1/40 pos MSFAC M Case 21 15 13
25 20–29 no ND ND ND 1.76/7 24.09 < 1/40 pos MSFAC I NA
26 20–29 no ND ND ND pos   1/40 pos MSFAC N Case 2
27 30–34 no ND ND ND 3.18/2.7 66.5 NA pos MSFAC O Case 10
  1. Ct Cycle threshold (quantitative result of the RT-PCR)
  2. NA Not available, ND Not done
  3. MSFAC Military support facility of the airbase of Creil