Which frequency is recommended for childhood skin testing for tuberculosis (TB) using the Mantoux test?
a. Every year for all children older than 2 years
b. Every year for all children older than 10 years
c. Every 2 years for all children starting at age 1 year
d. Periodically for children who reside in high-prevalence regions
ANS: D
Children who reside in high-prevalence regions for TB should be tested every 2 to 3 years. Annual testing is not necessary. Testing is not necessary unless exposure is likely or an underlying medical risk factor is present.
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Cancer is generally the result of a collection of genetic mutations or changes, not simply a mutation in one gene
Indicate whether the statement is true or false