
A recent prospective observational study of mercury concentration in blood, urine and stool of neonates and infants recently vaccinated with thimerosal-containing vaccines showed that ethyl mercury had a short half-life in these children and was primarily excreted rapidly in feces. This differs from oral methyl mercury from fish, which has a longer half-life in humans and toxicity at low concentrations, researchers report in the February issue of Pediatrics.
