Fecal viral load and norovirus-associated gastroenteritis

Abstract

We report the median cDNA viral load of norovirus genogroup II is ≥100-fold higher than that of genogroup I in the fecal specimens of patients with norovirus-associated gastroenteritis. We speculate that increased cDNA viral load accounts for the higher transmissibility of genogroup II strains through the fecal-oral route.