a disease causing microorganism is called a pathogen.
origin- pathos=suffering disease (in greek).
There are two main types; bacteria and virus.
all pathogens are microorganisms but all microorganisms are not pathogens.
example- mycobacterium tuberculosis is a pathogen that causes tuberculosis.
These diseases are caused by "viruses".
Pathogen
I think you mean Hepatitis. It is a viral infection.
Fungi
Skin diseases can be caused by viruses, fungi, bacteria, or parasites.
The smallest organism to do so is called a virus
The process of entrance and growth of a microorganism or virus in the host is called infection. Infection occurs when the pathogen gains access to the host's tissues, replicates or multiplies within the host, and causes disease symptoms.
Fungi can rot wood, spoil food, and cause skin diseases such as ringworm.
ricketessia causes typhus as well as rocky mountain spotted fever.
Not directly, but the infectious microorganism that causes the disease may produce a toxin that is the cause of some of the disease's symptoms. Not every disease causing microorganism produces a toxin.
A microorganism is called a "pathogen".
Ciliates can cause diseases such as balantidiasis, which is an intestinal infection in humans and other animals. Balantidium coli is the ciliate responsible for this disease when it infects the large intestine. Symptoms include diarrhea, abdominal pain, and in severe cases, dysentery.