Several pathogens can be transmitted postpartum. These include viruses, bacteria, and parasites. Common viral agents include [HIV](), [Hepatitis B](), and [Cytomegalovirus](). Bacterial infections often involve [Group B Streptococcus](), [Staphylococcus aureus](), and [Escherichia coli](). Parasites like [Toxoplasma gondii]() can also be transmitted from mother to child.