HC Deb 20 February 1911 vol 21 c1532
Captain KNIGHT

asked whether any measures have been taken by his Department to insure that the various forms of virus sold for the destruction of rats and other vermin are harmless to human beings?


In April, 1909, I addressed a letter to the manufacturers of these preparations suggesting the adoption of certain precautions to prevent harm arising to human beings, and I am not aware of any recent case of illness attributed to one of these preparations.