A vaginal test for Streptococcus lactis in a woman in labor is likely an imbalance in the vaginal flora and a vaginitis. Streptococcus agalactiae is a common gram-positive streptococcus bacteria that can be transmitted sexually, as well as through contact with unclean towels and public bathrooms. Streptococcus agalactiae can reside in the vagina and rectum and is a conditionally pathogenic bacterium that does not normally cause disease. However, maternal immunity is low, and infection with Streptococcus agalactiae may cause postpartum infections, bacteremia, and skin and soft tissue infections. Streptococcus lactis can also invade the newborn through the woman’s birth canal and cause neonatal infections, which are generally more serious. After diagnosis of Streptococcus agalactiae infection, penicillin can be used as prescribed by the doctor when the indications for treatment are met. During the treatment period, coitus is prohibited, and rest and personal hygiene are emphasized.