Generalities:

Milkweed or oral or vaginal candidiasis. Lung problems, immunodeficiency if it affects the thymus. Search for viruses that exempt it, for example:

Apthosus Virus (Carina - carina) or HIV (Thymus - rectum). It can also proliferate in the digestive tract and / or the respiratory system.

Transmission

By sexual contact, by diverse objects: hands, utensils, clothes, etcetera. There is also the transmission of the mother to the newborn at the time of delivery.