Table 2. Results of c-ELISA and indication of first seropositive result for Schmallenberg virus in red deer by department, France, 2010–2012*.

Department	Average distance to Meurthe-et-Moselle department, km†	No. positive samples/ no. tested in 2010–2011 (95% CI, %)	2011–2012		First positive result, 2011
			No. positive samples/no. tested	Mean prevalence, % (95% CI)
Moselle	46		4/26	15 (2–29)‡	Nov 5
Haute-Marne	102		26/53	49 (36–63)‡	Nov 12
Bas-Rhin	103	0/41 (<7)§	8/53	15 (6–25)‡	Oct 25
Côte d’Or	184		11/37	30 (15–45)‡	Dec 3
Oise	282		26/69	38 (26–49)‡	Dec 19
Loir-et-Cher	375		11/132	8 (4–13)‡	Nov 25
Hautes-Pyrénées	789	0/14 (<19)§	1/12	8 (0–30)‡	Dec 10
Corsica	749		0/23	0 (<12)§
Pyrénées Atlantiques	815		0/26	0 (<11)§

*c-ELISA, competitive ELISA.
†Department where first domestic clinical cases were reported, January 25, 2012.
‡95% CIs were estimated by assessing a binomial distribution of seroprevalence.
§Upper value of the 95% CI was estimated according a hypergeometric distribution of the risk to detect at least 1 positive result (p = 1–exp(Ln(0,05)/N), with N being the sample size).