Microbiology When neonatal meningitis is caused by streptococci, they usually are: A Streptococcus pyogenes (Group A) B Streptococcus Agalactiae (Group B) C Streptococcus Sanguis (Viridans) D Streptococcus pneumoniae (Serotype B) 💡 Explanation When neonatal meningitis is caused by streptococci, they usually are: ✓ Correct Answer: B. Streptococcus Agalactiae (Group B)