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Expert Q&A

 

By Mary Kay Smith
IBCLC, Lactation Consultant

How do you get thrush?

Mothers who are susceptible to vaginal yeast infections, have recently used antibiotics or have a history of diabetes (gestational or insulin-dependent) are more likely to harbor yeast in their bodies. A history of anemia, use of steroid medications such as those used to suppress pre-term labor, use of antidepressant medications or the use of oral contraceptives can also contribute to the possible invasion of yeast.

Mothers who experienced a Cesarean delivery may not be aware that they were given antibiotics post-delivery to prevent infection. The physical state of pregnancy is such that yeast infections are common.

Physical factors that can contribute to yeast growth include a humid environment, maternal obesity or clothes that hold in moisture, such as wet bathing suits, panty hose, tight jeans or wet bras and nursing pads.

Routes of transmission to the baby include passage through the birth canal during delivery or transmission during feedings, especially in the presence of cracked or abraded nipples. In some cases, the mother's sexual partner may harbor yeast and re-infect the mother. In this case, that person will need to be treated as well.

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