The serum of a newborn infant reveals a 1:32 cytomegalovirus (CMV) titer. The child is clinically asymptomatic. Which of the following courses of action would be advisable?
Clinical manifestations of cytomegalovirus (CMV) infection may not be readily apparent at bih. Thus, in a newborn infant with a 1:32 titer of CMV, it is necessary to determine whether the antibodies were passed transplacentally from the mother (these antibodies would be IgG) or produced by the fetus in response to an in utero infection (lgM). A newborn infant who is infected excretes large numbers of virus paicles in the urine and, therefore, places other neonates at risk for contraction CMV disease.
Repeat the CMV titer immediately
Wait 6 months and obtain another titer on the baby
Obtain an anti-CMV lgM titer from the mother
Obtain an anti-CMV lgM titer from the baby