§ Harry CohenTo ask the Secretary of State for Health what studies his Department has commissioned on the impact of mercury in vaccines and its effect upon children; and if he will make a statement. [73787]
§ Ms BlearsThe Committee on Safety of Medicines (CSM) has recently reviewed the currently available data relating to possible neurotoxicity of thiomersal (a mercury-containing compound) in vaccines and advised that there is no evidence of harm caused by doses of thiomersal in vaccines, except for sensitisation reactions. The CSM concluded that the risk: benefit balance of thiomersal-containing vaccines remains overwhelmingly positive.
The Institute of Medicine (IOM) in the United States also published a detailed review of the evidence relating to possible neurotoxicity of thiomersal in vaccines in October 2001. The IOM review also concluded that the evidence did not support a causal association between thiomersal contained in vaccines and neurodevelopmental disorders. These findings were consistent with the CSM conclusions.
We are aware of two studies in the United Kingdom looking at the relationship between mercury in vaccines and neurodevelopmental disorders in children. One of 802W these studies is funded by the Department and uses the Avon longitudinal study of pregnancy and childhood. The other study is using the general practice research database and is funded jointly by WHO and PHLS, which receives its funding from the Department. Neither of these studies supports an association between thiomersal exposure through the UK programme and neurodevelopmental disorders in children. The results of these studies have been made available to the Department and a summary of the findings is available in a Report to The US Congress which will be placed in the Library.