ABSTRACT
Seventeenth-century medicine was, unfortunately, still handicapped by wrong ideas about the human body. In the 18th century, the germ theory of disease was introduced and is still the currently accepted scientific theory for many diseases. It stated that microorganisms, known as pathogens or germs, can lead to diseases when they come into the human body. Germ refers not just to a bacterium but to any type of microorganism, such as protists or fungi, or even non-living pathogens that can cause diseases, such as viruses and prions (misfolded proteins). Several inventions were created in the 18th century, like the thermometer. Sensory nerves carry information to the central nervous system (CNS) and refer to the motor nerves that carry information to the spinal cord. All relevant scientific knowledge about physics, chemistry, biochemistry, and biology gained marks since at least the mid-19th century and contradicted homeopathy. The new insight into the germs made people blame sewers and cesspits for everything that made people sick.
