|Class 8 Biology Microorganisms: Friend and Foe||Harmful Micro-organisms|
There are many microbes which cause several diseases in plants, animals & human beings. Such disease-causing organisms are called Pathogens. Pathogens include bacteria, viruses, fungi & protozoa.
In this section, we will discuss about the various diseases caused by various pathogens. ‘Disease’ is a disturbed ease. Disease results in a change in either the functioning or the appearance of one or more systems of the body for worse.
Diseases in Humans: Typhoid