COMPLETE QUESTIONS AND ANSWERS
GRADED A+
●● Host. Answer: An organism that harbors a pathogen.
●● Colonization. Answer: Establishment of a pathogen in a host without
causing disease.
●● Infection. Answer: Invasion and multiplication of pathogens in a
host.
●● Virulence. Answer: The degree of pathogenicity of a microorganism.
●● Reservoir. Answer: A source of a pathogenic organism that may or
may not be suffering from the disease caused by the pathogen.
●● Vector. Answer: A living being that can carry the pathogenic
organism from the reservoir to the host.
●● Epidemiology. Answer: The study of disease distributions in human
populations.