In terms of community ecology, why are pathogens more virulent now than ever before?
A) More new pathogens have recently evolved.
B) Host organisms have become more susceptible because of weakened immune systems.
C) Human activities are transporting pathogens globally at an unprecedented rate.
D) Medicines for treating pathogenic disease are in short supply.
E) Sequencing of genes in pathogenic organisms is particularly difficult.

Question

Quizplus · Accepted Answer

Human activities, such as international travel and trade, have increased the rate at which pathogens are spread globally, leading to outbreaks in new areas where populations may not have immunity, thus appearing as increased virulence.

In Terms of Community Ecology, Why Are Pathogens More Virulent