1. Epstein Barr Virus, the cause of infectious mononucleosis, infects mainly children, adolescents and young adults in the. Adolescents are more likely to develop severe clinical illness because the virus has a higher degree of for them.WEEK 4.

a.Immunogenicity

b.Pathogenicity

c.Virulence <- Considering.

d.Infectivity

1. Which of the following are potential indications of the virulence of an infectious agent for a particular population:

a.An increase in the incidence rate in a specific age group

b.A high case fatality rate

c.A change in the proportionate mortality ratio

d.An increase in the number of cases sufficient to allow one to declare that an epidemic of this disease is underway

e.An increase in the secondary attack rate