Brandstifter

Hi, I am computer scientist with a strong background on mathematics and logic. In Maths we have fundamental books like the "Principia Mathematica" from Russel, Whitehead which more or less acts as the foundation of modern mathematics. I am looking for such books for medicine, which a non-medicine can read and comprehend from the ground up. My first interest is the creation process of a disease caused by microbes and virus. As far as I know the Microbiology began with Pasteur and his postulates about microbes. What books can you recommend? P.S.: My native language is german, so books in german are also welcome.