A Sick Child May Have Influenza or RSV

Multiple Choice

A sick child may have influenza or RSV. These virus infections have different treatment options, so the physician requests antibody titer tests. The results are as follows: anti-influenza antibodies are primarily IgM, and anti-RSV antibodies are all IgA and IgG. Which of the following is the most appropriate interpretation?

A) The child has a current RSV infection and was previously exposed to influenza.
B) The child has neither influenza nor RSV.
C) The child currently has influenza and has previously been exposed to RSV.
D) The child has concurrent influenza and RSV infections.
E) The results do not provide sufficient data to draw a conclusion.