[sc name=”block-before-question”]

Page 1 of 1

1. A 24-year-old woman presents with a 3-day history of fever, chills, chest pain, and cough productive of rust-colored sputum. Past medical history includes a splenectomy 1 year ago. A chest x-ray film indicates consolidation of the right lower lobe. Blood cultures are positive for a-hemolytic gram-positive diplococci. Immunity to the causative organism is based on
A.
B.
C.
D.
E.