A disease can spread by sneezing or via diarrhea that contaminates drinking water. Before widespread sanitation, the virulence of this disease was observed to be high, with a 10% death rate among infected children. The major mechanism of harm is the severe diarrhea. How would you expect the virulence of this disease to evolve if sanitation practices eliminated transmission via feces and drinking water? It would decrease. It would increase. It would stay the same. No prediction can be made.

A disease can spread by sneezing or via diarrhea that contaminates drinking water. Before widespread sanitation, the virulence of this disease was observed to be high, with a 10% death rate among infected children. The major mechanism of harm is the severe diarrhea. How would you expect the virulence of this disease to evolve if sanitation practices eliminated transmission via feces and drinking water? It would decrease. It would increase. It would stay the same. No prediction can be made.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter43: The Biosphere

Section: Chapter Questions

Problem 3CT

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