If the Vaccination Rate for Hepatitis B Virus in a Given

question 239

Multiple Choice

If the vaccination rate for hepatitis B virus in a given country is at 60 percent of the population, it is reasonable to conclude that

• A) "herd immunity" is in place.
• B) another 10‒20 percent of the population would have to be immunized before the disease is controlled or eradicated.
• C) transmission to infants will cease.
• D) older people are extremely unlikely to contract the disease.
• E) further immunizations will not be cost effective.

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Definitions:

Longitudinal Study

A research design that involves repeated observations of the same variables over short or long periods of time.

Spanking

A form of punishment involving hitting the buttocks with the hand or a small object, used by some caregivers as a disciplinary method for children.

Behavioral Problems

Refers to a range of actions and attitudes exhibited by individuals that are considered socially unacceptable or disruptive.

Child Maltreatment

Any act or series of acts of commission or omission by a parent or other caregiver that results in harm, potential for harm, or threat of harm to a child.