Volume 17, Number 5—May 2011
Letter
Seroprevalence of Toscana Virus in Blood Donors, France, 2007
Nadège Brisbarre
, Houssam Attoui, Pierre Gallian, Paola Di Bonito, Colomba Giorgi, Jean-Francois Cantaloube, Philippe Biagini, Mhammed Touinssi, Francois Jordier, and Philippe de Micco
, Houssam Attoui, Pierre Gallian, Paola Di Bonito, Colomba Giorgi, Jean-Francois Cantaloube, Philippe Biagini, Mhammed Touinssi, Francois Jordier, and Philippe de MiccoTable
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.
