M genomic segment concentrations for trials on surfaces.

NA: not available. M genomic segment concentrations expressed in log(copy number/mL) obtained for A/Paris/2590/2009 (H1N1)v and A/New Caledonia/20/99 (H1N1) strains on watch glass (B). Concentrations were determined at different days (designated as dx, x being the number of the day). RNA concentration at dtheoretical was obtained after the viral stock was diluted 1:10. In water (A), RNA concentration at d0 was obtained after the viral suspension was left 30 min in water under different conditions. On watch glass (B), RNA concentration at dwet was obtained 30 min after the viral suspension was left on the surface and RNA concentration at d0 was obtained after this viral suspension was totally dry. All experiments were done in duplicate.