Use this for the next three questions: In two communities of similar size and age structure (A and B), there were outbreaks of viral illnesses (Virus A in community A, and Virus B in community B), both of which were traced back to a single source. Exposure to these viruses in each community confers permanent immunity. In community A, 200 susceptible people were exposed to an index case, 150 people were infected (not including the index case), 75 people became ill, and 40 people died. In community B, pathogenicity was 40%, infectivity was 90%, and virulence was 60%. Which virus was most pathogenic? Virus A Virus B Virus A and B Which virus was most virulent? Virus A Virus B Virus A and B

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Use this for the next three questions: In two communities of similar size and age structure (A and B), there were outbreaks of viral illnesses (Virus A in community A, and Virus B in community B), both of which were traced back to a single source. Exposure to these viruses in each community confers permanent immunity. In community A, 200 susceptible people were exposed to an index case, 150 people were infected (not including the index case), 75 people became ill, and 40 people died. In community B, pathogenicity was 40%, infectivity was 90%, and virulence was 60%.

Use this for the next three questions: In two communities of similar size and age structure (A and B), there were outbreaks of viral illnesses (Virus A in community A, and Virus B in community B), both of which were traced back to a single source. Exposure to these viruses in each community confers permanent immunity. In community A, 200 susceptible people were exposed to an index case, 150 people were infected (not including the index case), 75 people became ill, and 40 people died. In community B, pathogenicity was 40%, infectivity was 90%, and virulence was 60%.

Which virus was most pathogenic?

Virus A

Virus B

Virus A and B

Which virus was most virulent?

Virus A

Virus B

Virus A and B

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