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Patient Population: Adult
  | Diagnosis | Common Pathogens | Drug(s) of First Choice | Alternative Drug(s) | Comments | Expected Duration | 
|---|---|---|---|---|---|
| Brain abscess (community-acquired) | Streptococci (anaerobic or aerobic) Bacteroides spp Prevotella spp Enterobacterales | Ceftriaxone 2g IV q12h PLUS PLUS | For severe PCN allergy: PLUS PLUS | ID consultation recommended | |
| Brain abscess (post-neurological procedure) | Streptococci (anaerobic or aerobic) Anaerobes Enterobacterales S. aureus & coagulase-negative Staphylococcus spp Pseudomonas aeruginosa Acinetobacter spp. | PLUS PLUS 
 | For severe PCN allergy: PLUS PLUS | ID consultation recommended |