Infectious Disease

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BACTERIA
VIRUSES
EUKARYOTES
MEDICATIONS
CLINICAL SYNDROMES

Empiric Drugs for Every Bug

A quick summary of which drugs are best for which bugs.

Gram Positives
S. pyogenes (Group A) Penicillin
Ampicillin
Ceftriaxone
S. galactiae (Group B) Penicillin
S. pneumoniae Penicillin
Erythromycin
Ceftriaxone
Viridans streptococci Penicillin
Enterococcus Ampicillin
Vancomycin
Aminoglycosides
S. aureus Nafcillin
Vancomycin
Linezolid
S. epidermidis Vancomycin
S. saprophyticus TMP/SMX
Listeria Ampicillin
Gentimicin
Gram Negatives
Neisseria Ceftriaxone
H. influenzae Ceftriaxone
Enterobacteriaceae Ceftriaxone
Piperacillin/Tazobactam
TMP/SMX
Pseudomonas Cefepime
Piperacillin-Tazobactam
Legionella Azithromycin
Levofloxacin
Bacteroides Metronidazole
Clindamycin
Bartonella hensalae Doxycycline
Azithromycin
Spirochetes and Intracellulars
Borrelia burgdorferi Doxycyline
Ceftriaxone
Treponema pallidum Penicillin
Chlamydia Doxycycline
Erythromycin
Rickettsia Doxycycline
Mycobacterium tuberculosis Isoniazid
Rifampin
Pyrazinamide
Ethambutol

Which Bugs Receive the Drugs?

A quick summary of which bugs are best treated with which drugs

Beta Lactams and Associated Drugs
Penicillin All Streptococci
Syphilis
Ampicillin S. pyogenes
Enterococcus
Listeria
Nafcillin S. aureus
Piperacillin-Tazobactam Enterobacteriaceae
Pseudomonas
Vancomycin Enterococcus
S. aureus
S. epidermidis
Ceftriaxone S. pyogenes
S. pneumoniae
Neisseria
H. influenzae
Enterobacteriaceae
Borrelia burgdorferi
Cefepime Pseudomonas
Ribosomal Inhibitors
Erythromycin S. pneumoniae
Chlamydia
Azithromycin Legionella
Bartonella henselae
Clindamycin Bacteroides
Linezolid S. aureus
Gentamicin Enterococcus
Listeria
Doxycycline Bartonella henselae
Borrelia burgdorferi
Chlamydia
Rickettsia
Other Antibiotics
TMP/SMX S. saprophyticus
Enterobacteriaceae
Levofloxacin Legionella
Metronidazole Bacteroides
TB Drugs:
Isoniazid
Rifampin
Pyrazinamide
Ethambutol
Mycobacterium tuberculosis

Shout out to "Jeff" for a clutch study guide.