§ Mr. GROVESasked the Minister of Health whether any means have yet been devised to secure that the vaccine lymph issued by the Government for vaccination purposes is free from the risk of setting up post-vaccinal encephalitis?
§ Sir K. WOODAll practicable steps are taken to ensure the purity of vaccine lymph issued by the Government Lymph establishment. I am advised that it is not yet possible to guarantee absolute absence of risk that encephalitis will follow the use of lymph, although that risk is very small.