Cold Sores and Embryo Implantation: No Evidence of Impact

Cold sores (HSV-1) do not affect embryo implantation. While herpes simplex virus can cause fever, headache, and fatigue, no evidence links it to implantation failure.

Pregnancy Considerations

  • Vertical transmission to fetus is rare and usually occurs in third trimester.
  • Active genital lesions at delivery risk neonatal herpes; C-section may be recommended.

If pregnant with cold sores, discuss risks and management with your doctor.

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