[Thiomersal in gammaglobulin for pregnant travellers may not be safe for the fetus. National Coordination Center for Travel Advisory].

It is not advisible to use thiomersal-containing gammaglobulin preparations for the prevention of hepatitis A in pregnant women. The current preparation of Sanquin-Centraal Laboratorium voor de Bloedtransfusiedienst will yield per 5 ml about 285 micrograms of ethylmercury. This exposure to ethylmercury may not be safe for the foetus and alternatives without ethylmercury are readily available.