Pathogens are microorganisms which can cause disease. These include bacteria, viruses and fungi. Have a look at the little things!
(Did you know viruses arenβt actually βaliveβ? Theyβre more like seeds β they multiply under certain conditions, but otherwise, theyβre dead.)
Pathogens can cause disease when they invade the interface between an organism and their environment. This could be someoneβs skin, lungs, digestive system, etc.
There are two ways which you need to know about in which pathogens cause disease: 1) damage to the cells, and…