A 5-year-old child was born in Mexico and received bacille Calmette-Guérin (BCG) vaccine as an infant. A PPD is administered as part of a routine office visit. After 48 hours, there is a 10-mm reaction. How should the PPD be interpreted?
A) Interpret the PPD as if the child had not received BCG
B) This child should not have undergone PPD testing because the result will always be positive
C) Interpret the PPD as a normal reaction
D) This child should not have undergone PPD testing because the result will always be negative