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Mercury in vaccines from the Australian childhood immunization program schedule
journal contribution
posted on 2010-01-01, 00:00 authored by David AustinDavid Austin, Kerrie Shandley, E PalomboDespite the removal of the mercury (Hg)-based preservative thimerosal from vaccines listed on the Australian Immunization Program Schedule for children, concerns remain among some researchers and parents for the safety of the present schedule, in part due to a fear of residual trace levels of Hg. The purpose of this study was to independently assess childhood vaccines for the presence of Hg. Eight vaccines administered to children under the age of 5 yr were assessed for Hg content via a DMA-80 direct mercury analyzer. Seven of the 8 vaccines contained no detectable levels of Hg (less than 1 ppb); however, 1 vaccine (Infanrix hexa) tested positive for Hg at 10 ppb. The result was confirmed and validated by retesting the original sample. Follow-up testing was conducted on three additional samples of Infanrix hexa (one from the same production lot and two from a different lot). All three tested positive for Hg (average of 9.7 ppb). Although the levels of Hg detected are substantially lower than any established exposure safety limits, the results of this study reveal that inaccuracies exist in public health messages, professional communications, and official documentation regarding Hg content in at least one childhood vaccine. In the interests of public health, it is incumbent on vaccine manufacturers and responsible agencies such as the Therapeutic Goods Administration and the Federal Department of Health and Ageing to address this issue as a matter of urgency.
History
Journal
Journal of toxicology and environmental health. Part AVolume
73Issue
10Pagination
637 - 640Publisher
Taylor & FrancisLocation
London, EnglandPublisher DOI
ISSN
1528-7394eISSN
1087-2620Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2010, Taylor & FrancisUsage metrics
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