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Bugs & Drugs
High Yield Bugs & Drugs
| Organism | Classification | Disease | DOC | Alternative drug |
|---|---|---|---|---|
| Bacillus anthracis | G+ Rod | pulmonary anthrax | Ciprofloxacin or doxy | (blank) |
| Clostridium difficile | G+ Rod anaerobic | pseudomembranous colitis | metronidazole | vancomycin |
| Clostridium perfringens | G+ Rod anaerobic | cellulitis or myonecrosis | penicillin + clindamycin | doxy |
| Listeria monocytogenes | G+ Rod | meningitis | ampicillin +/- gentamicin | TMP-SMX |
| Enterococcus sp | G+ Cocci | UTI, sepsis, endocarditis | cillin + AG | vancomycin or linezolid or quinu/dalfopristin |
| Staphylococcus aureus MSSA | G+ Cocci | abscess | nafcillin or oxacillin | 1st gen ceph or vancomycin |
| Staph. A. MRSA | G+ Cocci | abscess | vancomycin | linezolid or Quinupristin-dalfopristin or daptomycin |
| Strep Group A or B | G+ Cocci | pharyngitis | pen G or V | all beta lactams or macrolides |
| Strep pneumoniae (pen sens) | G+ Cocci | pneumonia | Pen G or amoxicillin | macrolides |
| Streptococcus pneumoniae (pen resis) | G+ Cocci | pneumonia | vancomycin or linezolid | dalfopristin/quinupristin; daptomycin |
| Bordetella pertussis | Gram - Rod | whooping cough | erythromycin | TMP-SMX |
| Brucella sp | Gram - Rod | brucellosis | doxy + either streptomycin or gentamicin | (blank) |
| Campylobacter jejuni | Gram - Rod | diarrhea | erythromycin or ciprofloxacin | (blank) |
| Escherichia coli | Gram - Rod | UTI / Wound | TMP-SMX or cipro / 3rd gen ceph or TMP-SMX | (blank) |
| Francisella tularensis | Gram - Rod | tularemia | strept or gent or tobramycin | doxy or ciprofloxacin |
| Haemophilus influenzae | Gram - Rod | meningitis / upper respiratory | 3rd gen ceph / TMP-SMX | Imipenem / several others |
| Helicobacter pylori | Gram - Rod | peptic ulcer | PPI + clarithromycin + either amoxicilin or metronidazole (or lots of others) | (blank) |
| Yersinia enterocolitica | Gram - Rod | gastroenteritis | TMP-SMX or FQ | 3rd ceph |
| Pseudomonas aeruginosa | Gram - Rod | sepsis (serious) | AG + piperacillin | AG + (3rd gen ceph; imipenem; FQ; aztreonam) |
| Yersinia pestis | Gram - Rod | plague | streptomycin or gentamicin | chloramphenicol or doxy |
| Klebsiella pneumoniae | Gram - Rod enteric | pneumonia / UTI (uncomplicated) | 3rd Ceph / FQ | Cipro, cell wall blockers / (N/A) |
| Salmonella sp | Gram - Rod enteric | enteric fever | ceftriaxone or FQ | TMP-SMX |
| Shigella sp | Gram - Rod enteric | dysentery | FQ or azithromycin | TMP-SMX |
| Borrelia burgdorferi | Spirochete | Lyme disease | doxy or amox or 3rd gen ceph | (blank) |
| Chlamydia trachomatis DK | Obligate intracellular | urethritis | doxy or azithromycin | erythromycin |
| Gardnerella vaginalis | G variable Rod | vaginosis | metronidazole | clindamycin |
| Mycobacteria tuberculosis | Acid-fast | tuberculosis (active) | rifampin + isoniazid + pyrazinamide | ...+ ethambutol |
| Mycoplasma pneumoniae | Wall-less | pneumonia | macrolide or FQ | doxy |
| Neisseria gonorrhoeae | G- Cocci | urethritis | 3rd gen Ceph | doxy |
| Neisseria meningitides | G- Cocci | meningitis | pen G | ceftriaxone |
| Rickettsia ricketsii | Obligate intracellular | Rocky Mountain spotted fever | doxy | chloramphenicol |
| Treponema pallidum | Spirochete | syphilis | pen G | doxy or tetracycline |