Eileen notices that her herpes infection is especially likely to flare up during the stressful occasions when she needs to work overtime hours in order to meet pressing deadlines.This is most likely to be caused by her body's

Question

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Stress is known to suppress the immune system, and specifically reduce the number of lymphocytes, which are important cells in our immune response. This makes it more difficult for the body to fight off infections, including those caused by herpes. Reduced levels of serotonin (A) have also been linked to increased stress, but are not directly tied to immune function. Increased levels of NK cells (B) and oxytocin (D) have not been shown to have a clear relationship with herpes outbreaks.

Eileen Notices That Her Herpes Infection Is Especially Likely to Flare