Physiology A newborn has a fever of 103degF. Blood culture grows gram-positive cocci in chains. This is most likely to be which of the following? A Group A Streptococci (Streptococcus pyogenes) B Group B Streptococci (Streptococcus agalactiae) C Salmonella species D Streptococcus pneumoniae 💡 Explanation A newborn has a fever of 103degF. Blood culture grows gram-positive cocci in chains. This is most likely to be which of the following? ✓ Correct Answer: B. Group B Streptococci (Streptococcus agalactiae)