Question

According to Diamond (Domestication and the Evolution of Disease), the pulses (periods of infection in a population followed by many disease-free years) that are characteristic of epidemic diseases are primarily caused by the fact that
a. the diseases become attenuated because if they kill their hosts they kill themselves.
b. disease organisms "grow tired" much as human cells do as a person ages, and eventually die off.
c. the entire human population dies so the disease can"t find any more victims.
d. human medical (cultural) responses such as the development of antibiotics can stop infection for long periods of time.
e. survivors have immunity for life so new epidemics can only start with the birth and accumulation of new society members who lack immunity.

Answer

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