§ Mr. Llew Smith
To ask the Secretary of State for Defence when his Department decided to declassify details of vaccinations used by departmental medical personnel; and what factors underlay this decision. 
§ Mr. Soames
I announced in my statement to the House on 10 December,Official Report, columns 119–23, our decision to declassify details of the vaccinations used during the Gulf conflict. The decision was taken in the light of a detailed review of the classification of the vaccination programme, given the developments in UK defensive capability against biological warfare agents since 1991.