16th February 2024

An 18-month-old boy was recently diagnosed with X-linked agammaglobulinaemia

An 18-month-old boy was recently diagnosed with X-linked agammaglobulinaemia. He had been admitted to the paediatric unit following another episode of pneumonia.

Which of the following organisms is most likely to have caused the infection?

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