Due to the fact that the patient and fetal cultures did not grow well, even on blood agar, rapid testing was performed on the specimens to confirm the patient's diagnosis. The ELISA and indirect staining were negative for any viral, fungal, or protozoan pathogens but were positive for a gram-positive bacterium that would produce the same phenotypic results as seen in the culturing of the patient specimen.

Based upon this information, what is the patient's diagnosis, and what infection ended the life of the fetus?
A. Listeriosis; listeriosis
B. Gastroenteritis; listeriosis
C. Gastroenteritis; group B strep colonization
D. Listeriosis; neonatal meningitis
1. Listeria monocytogenes
2. Vehicle transmission
3. Listeriosis; neonatal meningitis