That is a very good question. When you find a bacteria at the place where you do not find the same normally and then you get particular symptom and sign complex. Then you can say that this disease is caused by that particular organism. So when you are able to culture the bacteria from say blood or urine, where that is not found normally. Secondly after the infection of particular microorganism if you get the heightened antibody response you can say that particular organism is involved in that particular disease. Next you can have a statistical evidence to say that particular organism is responsible to cause the disease. So when you find streptococci in say 5 % of healthy persons and say 50 % of sore throat patients, you can say that this organism is associated with the pharyngitis.
yes. the can and they do.
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.
Live vaccines carry a small risk of developing an infectious disease. Inactivated vaccines cannot cause the infectious disease they're meant to prevent.
A pathogen causes infectious disease. For instance, influenza virus is the pathogen that causes flu.
an infectious disease which cause a red rash
you. you were a very infectious disease
Yes, they cause a large portion of the infectious diseases.
the plague
Pathogen.
Infectious disease may be referred to as extrinsic because the root cause came from outside of the patient's body. In contrast, a genetic condition may be considered intrinsic, because the cause is within the patient.
They both cause your body to not work properly.
Diabetes could cause all of that and more.