Final answer:
Outbreaks of neonatal and infant meningitis transmitted through contaminated powdered infant formula are often traced to S. agalactiae (Group B streptococcus).
Step-by-step explanation:
Outbreaks of neonatal and infant meningitis transmitted through contaminated powdered infant formula are often traced to S. agalactiae, also known as Group B streptococcus (GBS). GBS is an encapsulated gram-positive bacterium that is commonly found in the urogenital and gastrointestinal microbiota of humans.