13th August 2020

A 3-year-old boy has been referred from his GP for recurrent infections

A 3-year-old boy has been referred from his GP for recurrent infections. He is also known to have multiple background health issues, including a ventricular septal defect and seizures. On examination, he has low set ears and small jaw, and also a cleft palate.  

Which of the following components of the immune system is most likely deficient, resulting in his recurrent infections?

Select the SINGLE most appropriate option from the list below. Select ONE option only.