asked the Secretary of State for War how many of the soldiers vaccinated at Aldershot had already been vaccinated within the previous 12 months; and how long vaccination in the Services is stated to be protective against smallpox.

In an outbreak of this kind re-vaccination is offered to all men closely exposed to infection. It would take much time and effort to obtain the figures required.Under Army Regulations men are offered re-vaccination against smallpox every five years at home and every two years overseas.