Accepted at 8:42 p.m. Sep, 11, 2025 by Ahmed7
Author: andrewmathias8
Related Note: 1520444690841
Rationale for change

An important contast can be drawn here. This is key to answering an NBME question from OBGYN form 6:

Question: An otherwise healthy 18-year-old woman presents with 2 days of vulvar pain. She reports being sexually active with three male partners and admits to inconsistent condom use. On exam, there is a tender, nonindurated ulcer on the right labium majus that bleeds easily when touched. Which organism is the most likely cause?

Answer: Haemophilus ducreyi (and Klebsiella granulomatis is an incorrect answer choice)
Source: Other - NBME OBGYN Form 6

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#AK_Step1_v12::#Physeo::^physeo_image_update #AK_Step1_v12::#OME_banner #AK_Step1_v12::#Bootcamp::Microbiology::10_Lactose_Fermenting_Gram_Negative_Bacilli::03_Klebsiella #AK_Step1_v12::#Low/HighYield::2-RelativelyHighYield #AK_Other::#AK_Original_Decks::Step_1::Lolnotacop::Etc::UW_Micro_(do_this_one_last) #AK_Other::Only_Step_1 #AK_Step1_v12::#Physeo::06_Micro::02_Bacteria::53_Miscellaneous_Organisms #AK_Step1_v12::#SketchyMicro::uw_micro_(do_this_one_last) #AK_Step1_v12::#FirstAid::03_Microbiology::06_Systems::12_Sexually_transmitted_infections #AK_Step2_v12::#FirstAid::15_Renal/Genitourinary::18_Sexually_Transmitted_Diseases::04_Genital_Lesions #AK_Step1_v12::#AMBOSS::yradPN #AK_Step2_v12::#SketchyIM::09_Infectious_Diseases::03_GU_Infections::04_Genital_Ulcers_DDx #AK_Step1_v12::#FirstAid::03_Microbiology::02_Clinical_Bacteriology::*Klebsiella_Granulomatis