Question

Question 13 0.75 pts An employee had been infected with a disease and was contagious when he had attended a work event. He had close contact with all 40 other meeting attendees (assume all were exposed) Shortly after, 22 people developed symptoms of the disease. Of the 22, that developed symptoms 4 had to be hospitalized because of severe symptoms. All 40 attendees (besides the original employee) later submitted to a blood test and it was later found that 33 had been infected with the disease. Calculate the following (do not include the index case): Convert the final number to a percent and include a % sign. Round to the nearest whole number. (i.e. (.465) becomes (47%)). A. Infectivity of the disease B. Pathogenicity of the disease C. Virulence of the disease

Answer 1

1. Infectivity is an organism ability to infect you. Here you can be infected but not sick or does not cause disease. So as per data the number of infected are 33/40.so the percentage of infectivity is 83%.

2.Pathogenesity is the ability of organism to cause some sort of disease.As per the question , the number of attendees who develop are 22/40.so the the percentage of pathogenecity is 55%.

3.Virulence refers to the measure of degree of disease that a pathogen cause that could knock you out and might be even fatal.The number as per statistics show , virulence account for 4/40 .so the percentage of virulence is 10%.