The fact that I was fortunate enough to escape contagion, in spite of frequent, sometimes daily contacts with the disease, was because I soon guessed how it spread. — Charles Jules Henry Nicole Copy Share Image
Even if it had not been possible to reproduce the disease in animals and consequently to verify the hypothesis, this simple observation would have been sufficient to demonstrate the way in which the disease was propagated. — Charles Jules Henry Nicole Copy Share Image
At the time when I was conducting my research there was no known method for taking the guinea pig's temperature. I demonstrated a technique… — Charles Jules Henry Nicole Copy Share Image
The fact that I was fortunate enough to escape contagion, in spite of frequent, sometimes daily contacts with the disease, was because I soon… — Charles Jules Henry Nicole Copy Share Image
From the practical point of view, the susceptibility to infection of the guinea pig proved to be the most useful step forward. Today, all… — Charles Jules Henry Nicole Copy Share Image
It did not seem likely that I was destined to undertake research on typhus. — Charles Jules Henry Nicole Copy Share Image
Even if it had not been possible to reproduce the disease in animals and consequently to verify the hypothesis, this simple observation would have… — Charles Jules Henry Nicole Copy Share Image
I demonstrated the characteristics of experimental fever. It appears after an incubation period which is never less than five days. It follows the same… — Charles Jules Henry Nicole Copy Share Image
Just as the only reservoir for the typhus virus in nature is provided by man, so the only vector of infection is the louse.… — Charles Jules Henry Nicole Copy Share Image
I finally demonstrated that typhus infection is not hereditary in the louse. — Charles Jules Henry Nicole Copy Share Image
The discovery that I soon made that the guinea pig was also susceptible to infection made it possible for me, from the third year… — Charles Jules Henry Nicole Copy Share Image
