Hand-Foot-Mouth Disease Exposure While Pregnant

What does the evidence say about hand, foot, and mouth disease exposure during pregnancy?

1. CDC describes hand, foot, and mouth disease as usually mild, very contagious, and commonly lasting seven to ten days. It specifically advises pregnant people to contact their doctor after exposure because individual circumstances and gestational timing matter. 1
2. CDC states that hand, foot, and mouth disease spreads through respiratory droplets, close contact, saliva or shared items, blister fluid, stool, and contaminated objects. People are most contagious during the first week but can spread virus for days or weeks afterward. 2
3. A seven-year Tuscan descriptive series evaluated 128 pregnant patients with suspected enterovirus infection, including 52 with symptoms. Three miscarriages and a small number of fetal or newborn findings occurred, but inconsistent virologic confirmation and no disease-matched control left pregnancy effects inconclusive. 3
4. One report described an 18-year-old with clinical hand, foot, and mouth disease at 34 weeks who later had a healthy newborn at 39 weeks with an Apgar score of 9. A single case cannot estimate fetal risk or prove safety. 4
5. A separate case report described nail shedding after maternal hand, foot, and mouth disease without an adverse pregnancy outcome. It documents a delayed maternal skin finding, but one unconfirmed case cannot establish the frequency of that finding or pregnancy risk. 5

Is hand, foot, and mouth disease exposure safe in each trimester?

• First trimester. First-trimester outcome data are too limited to quantify miscarriage or birth-difference risk. Contact the prenatal clinician after a confirmed exposure, particularly if fever, mouth sores, or a blister-like hand or foot rash develops.
• Second trimester. Reduce household spread with 20-second handwashing after diaper changes and toilet use, cleaning frequently touched objects, and avoiding saliva, shared cups, utensils, and close face-to-face contact during illness.
• Third trimester. If symptoms occur near delivery, notify the obstetric and newborn teams so timing and infant observation can be planned. Published pregnancy evidence is mostly small series and case reports, so an uncomplicated single case does not establish population safety.