A medical epidemiologist and leader of the GAVI Alliance.

Ban on thiomersal in vaccines would damage global immunization efforts Government representatives are conference in Geneva this week to choose whether to introduce a worldwide ban in mercury that could consist of thiomersal, a mercury-based preservative that is found in some vaccine production since the 1930s to avoid bacterial or fungal contamination of multidose vials of vaccine, Seth Berkley, a medical epidemiologist and leader of the GAVI Alliance, writes in a fresh York Instances opinion piece inability to sustain . Regardless of the ominous connotations of mercury, your choice should in theory be considered a no-brainer: The scientific and medical consensus is usually that thiomersal poses no individual health risk, and that than conserving lives rather, a ban would place an incredible number of the world's poorest children vulnerable to deadly illnesses by disrupting vaccination applications, he continues.