Table 1 Number of cases, mean annual incidence per 100,000 and respective 95% confidence intervals (CI) for CCHF in Bulgaria between 1997 and 2009 by district
From: Environmental correlates of crimean-congo haemorrhagic fever incidence in Bulgaria
|  | N° cases | Incidence | 95%CI |
|---|---|---|---|
BRG – Burgas | 71 | 0.59 | (0.47; 0.74) |
GSO – Sofia city | 1 | 0.02 | (0.00; 0.18) |
HKS – Haskovo | 25 | 0.21 | (0.14; 0.30) |
LVC – Lovech | 3 | 0.02 | (0.01;0.05) |
MKH – Mikhaylovgrad | 0 |  |  |
PLD – Plovdiv | 25 | 0.14 | (0.07; 0.17) |
RZG – Razgrad | 0 |  |  |
SOF – larger Sofia area | 12 | 0.04 | (0.02; 0.07) |
VAR – Varna | 22 | 0.16 | (0.11; 0.25) |
West (GSO, SOF, PLD) | 38 | 0.08 | (0.05; 0.10) |
East (BRG, HKS, VAR) | 118 | 0.31 | (0.26; 0.37) |
Other areas (LVC, MKH, RZG) | 3 | 0.01 | (0.00; 0.03) |
Total | 159 | 0.13 | (0.11; 0.15) |