VIRUS
VIRUS [vahy-ruhs]
What it is: Sub-microscopic infectious agent that replicates inside living cells and can cause disease in all types of life forms.
What it is: Sub-microscopic infectious agent that replicates inside living cells and can cause disease in all types of life forms.
What it is: A bacteria, virus or fungi that has reached a population size large enough to cause disease or illness in humans. Simply known as a germ.