Babies positive for group b streptococcus usually need to be observed for about half a month. Streptococcus b is generally parasitic in the human vagina and rectum, to healthy adults generally do not cause serious infectious diseases, but can be through the vagina of pregnant women retrograde upward retrograde infections to newborns, may cause newborns to sepsis, pneumonia, meningitis and other diseases, therefore, in the monitoring of newborn babies with positive Streptococcus b generally need to be kept in the hospital for observation for about half a month. During the period of observation, the neonate should be examined regularly, usually by blood test or throat swab, and should be treated promptly if there are obvious symptoms, and the exact end of the observation is related to the results of the neonate’s b-streptococcus test; in most cases, the test results can turn negative in half a month or so, and then observation can be discontinued.