Where can I find info about bacterial infections in newborns.?

You could try some of links below as a start. The Merck Manual is a diagnostic tool many doctors refer to that would at least give you some help with the symptoms. Can you give a synopsis of the case study you are doing with more detail as to background on the mother? That may help to narrow down the possibilities if there is some correlation as to her medical history and whereabouts during her pregnancy.