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): (a) inefectivity of the desease = ) pathogenicity of the desease = ) virulence of the desease =