How is Infectivity Different from Virulence and Pathogenicity?
While infectivity focuses on the ability of a pathogen to infect a host, virulence refers to the severity of the disease caused by the pathogen. Pathogenicity, on the other hand, is the ability of a pathogen to cause disease. Although these terms are related, they are distinct concepts. A pathogen can have high infectivity but low virulence, meaning it spreads easily but causes mild disease.
