Colonization refers to the spread of plague to the Americas by settlers from Europe.
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Q11: Vectors can be considered as one way
Q12: The term generation time relates to the
Q13: Herd immunity refers to protection of a
Q14: Incubation period refers to the time between
Q15: Herd immunity must be 100% to confer
Q17: A secondary attack rate is used to
Q18: The case fatality rate is the same
Q19: The case fatality rate of a disease
Q20: Home-canned foods would be a likely source
Q21: Vaccine-preventable diseases include Haemophilus influenzae type b
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