Research
High level Candida colonization is linked to several diseases of the gastrointestinal tract including Crohns disease.There has been an increase in resistance to antifungals worldwide over the past 30–40 years. References
External links

Candidiasis at Curlie
"Yeast Infections". MedlinePlus. U.S. National Library of Medicine.
Most commonly from Ureaplasma, Fusobacterium, and Streptococcus bacteria species. Less commonly, Gardnerella, Mycoplasma, and Bacteroides bacteria species. Sexually transmitted infections, chlamydia and gonorrhea, can cause development of the condition as well. Studies are continuing to identify other microorganism classes and species as infection sources. Obstetric and other
Birthing-related events, lifestyle, and ethnic background have been linked to an increase in the risk of developing chorioamnionitis apart from bacterial causation. Premature deliveries, ruptures of the amniotic sac membranes, prolonged labor, and primigravida childbirth are associated with this condition. At term mothers who experience a combination of pre-labor membrane ruptures and multiple invasive vaginal examinations, prolonged labor, or have meconium appear in the amniotic fluid are at higher risk than at term mothers experiencing just one of those events. In other studies, smoking, alcohol use and drug use are noted as risk factors. Those of African American ethnicity are noted to be at higher risk. Anatomy
The amniotic sac consists of two parts: 

The outer membrane is the chorion. It is closest to the mother and physically supports the much thinner amnion. The chorion is the last and outermost of the membranes that make up the amniotic sac. The inner membrane is the amnion. It is in direct contact with the amniotic fluid, which surrounds the fetus. The amniotic fluid exists within the amnion, and is where the fetus is able to grow and develop.