Microbiology There has been much speculation on the pathogenesis of group B streptococcal disease in the neonate. One of the most likely pathogenic mechanisms is A Complement C5a, a potent chemoattractant, activates PMNs B The streptococci are resistant to penicillin C The alternative complement pathway is activated D In the absence of specific antibody, opsonization, phagocyte recognition, and killing do not proceed normally 💡 Explanation There has been much speculation on the pathogenesis of group B streptococcal disease in the neonate. One of the most likely pathogenic mechanisms is ✓ Correct Answer: D. In the absence of specific antibody, opsonization, phagocyte recognition, and killing do not proceed normally