Question

1. rheumatic fever is most commonly caused by:

○ septicemia
○ mononucleosis
○ herpes zoster
○ streptococcus pyogenes

Explanation:

Rheumatic fever is an inflammatory disease that can occur after an untreated streptococcal infection (like strep throat) caused by Streptococcus pyogenes (group A Streptococcus). Septicemia is a blood infection, mononucleosis is caused by Epstein - Barr virus, and herpes zoster is caused by varicella - zoster virus, so they are not the main cause of rheumatic fever.

Answer:

D. streptococcus pyogenes