what is considered an infectious disease
Infectious disease is disease caused by a pathogen which enters the body and triggers the development of an infection.These diseases have a range of causes, and they can be found all over the world.any of these diseases make the body vulnerable to secondary infections, in which other organisms move in to take advantage of a weakened immune system, and this can be very problematic. Ad. The study of infectious disease is known as epidemiology.
Infection is the invasion of an organism's body tissues by disease-causing agents, their multiplication, and the reaction of host tissues to these organisms and the toxins they produce.Infectious disease, also known as transmissible disease or communicable disease, is illness resulting from an infection.nfections are caused by infectious agents including viruses, viroids, prions, bacteria, nematodes such as parasitic roundworms and pinworms, arthropods such as ticks, mites, fleas, and lice, fungi such as ringworm, and other macroparasites such as tapeworms and other helminths.