Microbiology Causative agent of acute rheumatic fever: A Group `A' b-hemolytic streptococcus B Group -B b-hemolytic streptococcus C Group -C b-hemolytic streptococcus D Group -D b-hemolytic streptococcus 💡 Explanation Causative agent of acute rheumatic fever: ✓ Correct Answer: A. Group `A' b-hemolytic streptococcus