“The other question which you raised, as to whether the louse can be infected by a typhus patient vaccinated for protection, will also be dealt with. In principle, this has also been approved. There are, however, still some difficulties at the moment about the practical execution, since we have at present no facilities for breeding lice.
“Your suggestion to use Olzscha has been passed on to the personnel department of the SS Medical Office. It will be given consideration in due course.
“With kind regards, and
“Heil Hitler!
“Yours
“Dr. Mrugowsky, SS Obersturmbannfuehrer.”
There is a footnote to this letter, and I quote:
“According to telephone inquiry, Dr. Mrugowsky asks to be called by telephone after Professor Dr. Rose’s return. Dr. Mrugowsky will not be in Berlin in June. His deputy, Dr. Ding, is informed. 20 May 1942.”
This letter shows that Dr. Mrugowsky once informed me that the Reich Physician SS and Police had consented to the testing of typhus vaccines. He then asks me to send him these vaccines. I cannot recall what vaccines he is speaking of.
Then the question is discussed about lice being infected by typhus patients vaccinated for protection.