<P> Infection is the invasion of an organism 's body tissues by disease - causing agents , their multiplication , and the reaction of host tissues to the infectious agents and the toxins they produce . Infectious disease , also known as transmissible disease or communicable disease , is illness resulting from an infection . </P>
<P> Infection is the invasion of an organism 's body tissues by disease - causing agents , their multiplication , and the reaction of host tissues to the infectious agents and the toxins they produce . Infectious disease , also known as transmissible disease or communicable disease , is illness resulting from an infection . </P>
within the chain of infection the disease producing agent is referred to as
within the chain of infection the disease producing agent is referred to as
Infectious disease
Infectious disease