Created at 11:05 a.m. May, 13, 2026
Author: cytokine32
Co-authors: qais8r
Related Note: 1506190688913 2
Rationale for change

The current answer appears incomplete because several clinically important Gram-positive rods are catalase positive, not only Listeria monocytogenes and Nocardia. Bacillus species (including B. anthracis) and Corynebacterium species (including C. diphtheriae) are also catalase positive and are commonly emphasized in microbiology classification and board-style review resources.

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#AK_Step1_v12::#Bootcamp::Microbiology::09_Non_-Spore_Forming_Gram_Positive_Bacilli::04_Nocardia #AK_Step1_v12::#FirstAid::03_Microbiology::06_Systems::*Bug_Hints #AK_Step1_v12::#UWorld::COMLEX::25998 #AK_Step1_v12::#B&B::13_Immunology::02_Clinical_Immunology::03_Immune_Deficiency_Syndromes #AK_Other::Only_Step_1 #AK_Step1_v12::#UWorld::Step::14895 #AK_Step1_v12::#B&B::04_Biochem::02_Metabolism::05_HMP_Shunt::Extra #AK_Step1_v12::#Low/HighYield::1-HighYield #AK_Step1_v12::#AMBOSS #AK_Step1_v12::#SketchyMicro::01_Bacteria::02_Gram_(+)_Bacilli::07_Listeria_monocytogenes #AK_Step1_v12::#FirstAid::03_Microbiology::02_Clinical_Bacteriology::17_Listeria_monocytogenes #AK_Step1_v12::#Physeo::08_Immunology::02_Immunodeficiencies::14_Chronic_Granulomatous_Disease_(CGD) #AK_Step1_v12::#B&B::14_Infectious_Disease::01_Basics_of_Microbiology::07_Bacterial_Identification::Extra #AK_Step1_v12::#Physeo::06_Micro::02_Bacteria::07_Lysteria_Monocytogenes #AK_Step1_v12::#SketchyMicro::01_Bacteria::03_Gram_(+)_Branching_Filamentous_Rods::02_Nocardia_asteroides #AK_Step1_v12::#Bootcamp::Microbiology::09_Non_-Spore_Forming_Gram_Positive_Bacilli::03_Listeria_Monocytogenes #AK_Other::#AK_Original_Decks::Step_1::Lolnotacop::Bugs #AK_Step1_v12::#FirstAid::02_Immunology::03_Immune_Responses::16_Immunodeficiencies::04_Phagocyte_dysfunction::*Chronic_Granulomatous_Disease #AK_Step1_v12::#OME::Clinical::Internal_Medicine::Infectious_Disease #AK_Step1_v12::#Textbooks::#Mims_Microbiology::23_Gastrointestinal_Tract_Infections #AK_Step1_v12::#DirtyMedicine::03_Microbiology::19_Listeria_Monocytogenes #AK_Step1_v12::#DirtyMedicine::03_Microbiology::21_Nocardia #AK_Step1_v12::#Pixorize::02_Immunology::06_Immunodeficiencies::08_Chronic_Granulomatous_Disease_(CGD) #AK_Step1_v12::#Physeo::^physeo_image_update #AK_Step1_v12::#Pixorize::04_Microbiology::04_Bacteria-Gram_Positive::21_Nocardia #AK_Step1_v12::#AMBOSS::k1amSj #AK_Step1_v12::#B&B::18_Pathology::01_General::03_Free_Radicals