Final answer:
The symptoms described by the primigravid client at 8 weeks' gestation, including flu-like symptoms, enlarged lymph nodes, and vesicles on the vagina, are indicative of herpes genitalis (HSV). Other STIs such as gonorrhea, Chlamydia, and syphilis present differently and are less likely to cause these specific symptoms. a) gonorrhea
Step-by-step explanation:
A primigravid client at 8 weeks' gestation who has flu-like symptoms, enlarged lymph nodes, and clusters of vesicles on the vagina after sexual relations with a new partner likely has herpes genitalis (HSV). This suspicion is based on the presence of flu-like symptoms, such as fever and malaise, and the characteristic clusters of vesicles which are symptoms associated with herpes simplex virus infection.
Other sexually transmitted infections (STIs), like gonorrhea and Chlamydia trachomatis infection, generally present differently and are less likely to produce these vesicular lesions. Syphilis (caused by Treponema pallidum) might present with a chancre, but not typically flu-like symptoms or vesicular lesions. The nurse is correct to refer the client to a primary health care provider (HCP) for further evaluation and management.