noun Date: 1965 any of various strains of a streptococcus ( Streptococcus agalactiae ) that include the causative agents of certain infections (as pneumonia and meningitis) especially of newborn infants
GROUP B
Meaning of GROUP B in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012