The Technique of Vaccination as Developed by Jenner Was an Improvement

question 26

Multiple Choice

The technique of vaccination as developed by Jenner was an improvement over variolation because

• A) the smallpox virus mutates frequently but the cowpox virus does not.
• B) cowpox vaccination was not just preventative but could also cure an active case of smallpox.
• C) cowpox was common in Europe at the time while smallpox was not.
• D) the cowpox virus used by Jenner was not fatal to humans but provided protection against smallpox.
• E) Jenner's technique required a lower rate of herd immunity to prevent the spread of smallpox.

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Definitions:

Sleep

A natural, reversible state of reduced responsiveness to external stimuli and relative inactivity, accompanied by a loss of consciousness.

Hours

Units of time equivalent to 60 minutes, used to measure the duration of events or the length of the day.

Readiness Potential

A measure of brain activity indicating the pre-motor buildup of neural processes preceding voluntary muscle movements.

Brain Activity

The functioning or operation of the brain, measured by various physiological or neuroimaging techniques.