Dr. Tipp: Witness, you heard the Tribunal’s wish. In the opinion of the Tribunal, the typhus danger for Germany has already been sufficiently proved. Please go on to the subject itself now. Perhaps you could speak of the usual preventive measures which are used against typhus, particularly vaccines.
Witness Haagen: There are, in general, two procedures to prevent typhus. One is what I might call the mechanical procedure, and the other the biological procedure. In the mechanical procedure we are concerned with combating the lice—I shall not go into that—but in the biological procedure we are interested in a protective vaccine. There are various vaccines available. Now, to get down to the crux of the matter, I must say that the typhus vaccines which are made from dead typhus virus do not provide absolute protection against the disease. They may lead to a milder form of the disease, but the infection itself is not prevented. Dead typhus vaccine, in other words, has no absolute anti-infectious effect, which, however, is the main point of any vaccine.
We developed a live vaccine, not on the basis of our own experiences and research, but we made use of the experiences of others. I should like to mention primarily the work of the French typhus research scientists, Blanc, Baltasar, and assistants Legrer and Lecolle. When vaccinating, a vaccine must be used which gives anti-infectious protection, and in general, in the case of virus diseases, successful vaccination is also achieved only with live virus. Let me mention the examples of smallpox, influenza, and yellow fever. In all these cases the vaccines are made from a live virus, but it is true that this virus is mutated, that is, it is no longer pathogenic to human beings. Its pathogenic characteristics have been suppressed and have disappeared, but the virus retains its anti-infectious efficacy. This change is accomplished in two ways, either by passing the virus through an animal—this is frequently done—and sometimes effects mutation in the virus and sometimes weakens the virus. I need not go into that; it would take up too much time.
Q. If I understand you correctly, Witness, your aim as a scientist was to develop a vaccine from live virus; in other words from a nonpathogenic virus which could not cause the disease, but which, nevertheless, had the antigenic effect, namely the effect of protecting the vaccinated person against contracting the disease later by infection. Is that so?
A. Yes. That is correct.
Q. Now, Witness, nobody is reproaching you for having produced vaccines, but it is said that you tested the effectiveness of your vaccines in a concentration camp. The prosecution called these virulent and you say they were nonpathogenic. At any rate, that is the way I understood the reproach of the prosecution; but first before you go into this, Witness, will you please tell the Court how it happened that you came into contact with the concentration camp Natzweiler in this matter?
A. The development of typhus throughout the war was such that typhus no longer became purely a war epidemic, but because of the many refugee camps, PW transports, and military transports, typhus was brought into Germany itself. In the overcrowded camps, especially with lack of sanitary installations, there was considerable danger from typhus, particularly where people assembled who came from the East. I have only to say that in the Auschwitz camp, for example (but also in many other prisoner camps in the east), there had already been extensive epidemics. Typhus pressed further and further into Germany. Every closed community such as a camp is, in itself, a great source of danger of typhus, not only the danger of an epidemic within the camp, but also an epidemic that spreads to the surrounding civilian population. Most of the concentration camp inmates worked outside the camp in factories and they came into contact with the civilian population, so you can easily see the danger of contagion. Now, in brief, the camp commandant and the camp doctor in the course of the spring of 1943 asked me whether they could have my assistance in combating this danger.
Q. Witness, a preparatory question first. Did you have any connection with the SS, with the concentration camp, as such?
A. I had no connection with the SS or with the concentration camps, or with any office in charge of them.
Q. Why did the camp commandant and the camp physician of the Natzweiler concentration camp turn specifically to you?