Question

A $12$-month-old boy is brought to the clinic for a routine well-child examination. He was diagnosed with perinatal human immunodeficiency virus (HIV) infection and is currently receiving antiretroviral therapy. His mother reports he has had a mild cough and rhinorrhea for the past $2$ days. On physical examination, his temperature is $37.8^\circ\text{C}$ ($100.0^\circ\text{F}$), pulse is $120/\text{min}$, and respirations are $32/\text{min}$. Lung auscultation reveals diffuse bilateral wheezing and mild crackles without increased work of breathing. When asked about his behavior, the mother is concerned because he only specifically says 'mama' and 'dada' and stands alone but cannot walk independently. Recent laboratory results show a CD4+ T-cell percentage of $12\%$. His immunizations are up to date through the $6$-month schedule. Which of the following is the most appropriate next step in management for this patient?