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Volume 17, Number 5—May 2011

Letter

Seroprevalence of Toscana Virus in Blood Donors, France, 2007

Nadège BrisbarreComments to Author , Houssam Attoui, Pierre Gallian, Paola Di Bonito, Colomba Giorgi, Jean-Francois Cantaloube, Philippe Biagini, Mhammed Touinssi, Francois Jordier, and Philippe de Micco
Author affiliations: Author affiliations: Université de la Méditerranée, Marseille, France (N. Brisbarre, P. Gallian, J.-F. Cantaloube, P. Biagini, M. Touinssi, F. Jordier, P. de Micco); Institute for Animal Health, Woking, UK (H. Attoui); Instituto Superiore di Sanità, Rome, Italy (P. Di Bonito, C. Giorgi)

Main Article

Table

Prevalence of antibodies against Toscana virus in blood donors, France, 2007*

Demographic characteristic No. donors % IgG-positive samples % IgM-positive samples
Age, y
<30 211 11.8 3.8
30–39 133 11.3 3
40–49 156 11.5 2.6
50–60 158 10.8 4.4
>60
71
12.7
1.4
Sex
F 353 13.9 2.5
M
376
9.3
4
French territorial division†
Alpes de Haute Provence 29 10.3 3.4
Hautes Alpes 64 6.25 1.6
Alpes Maritime 111 19 0
Bouches du Rhône 143 12.6 2.8
Corsica 115 8.7 8.7
Var 154 8.4 1.9
Vaucluse
113
13.3
4.4
Total 729 11.5 3.3

*Plasma samples were determined as positive by using an ELISA to detect immunoglobulin (Ig) G against Toscana virus (absorbance cutoff value [optical density at 450 nm (OD450)]>0.47) and IgM (absorbance cutoff value of OD450>0.15). Mean age of seropositive blood donors were the following: women, 40 y (SD 13.73 y); men, 41.8 y (SD 13.71 y).
†French territorial division elevations: Alpes de Haute Provence, 280–3,412 m; Hautes Alpes, 430–4,101 m; Alpes Maritimes, 0–3,143 m; Bouches du Rhône, –2–1,042 m; Corsica, 0–2,706 m; Var, 0–1,714 m; Vaucluse, 12–1,909 m.

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