Table 1 Timing of study procedures by network
Location of network | Date of onset (DOO) index | Median (range) number of days between DOO index and start sampling among contacts in ring 1b | Median (range) number of days between DOO index and start sampling among contacts in ring 2 |
|---|---|---|---|
1. Nijmegen | 21-11-2011 | 30 (24–42) | 45 (43–50) |
2. Groningen | 1-1-2012 | 19 (17–29) | 30 (19–33) |
3. Groningen | 19-1-2012 | 26 (21–30) | 32 (23–41) |
4. Nijmegen | 21-1-2012 | 23 (23–25) | 31 (23–56) |
5. Groningen | 13-3-2012 | 20 (14–24) | 30 (22–60) |
6. Amersfoort | 29-2-2012 | 28 (28–54) | 34 (30–37) |
7. Maastrichta | 30-3-2012/20-3-2012 | 57 (57–57) | 69 (69–72) |
8. Nyenrode | 25-3-2012 | 38 (38–38) | 36 (27–40) |
9. Wageningen | 29-3-2012 | 27 (27–27) | 36 (33–52) |
10. Nijmegen | 27-3-2012 | 31 (24–37) | 48 (35–48) |