Bacteria and their antibiotic treatment at a glance
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Bacteria and their treatment at a glance
Gram positive
Cocci
Catalase positiveàStaphylococcus
· S. aureus – flucloxacillin
· S.saprophyticus – Penicillin
· S. Epidermin - Vancomycin
Catalase negativeàStreptococcus
· Group A B-haemolytic strep: S. Pyogenes
· GBS – agalactiae
· Alpha-haemolytic – S.viridians and S.pneumoniae
· Gamma-haemolytic – enteroccus
Treat above with penicillin
Other Gram positives - Rods
· Clostridium – metronidazole then vancomycin
· Listeria – ampicillin, ceftriaxone, cotrimoxazole
· Bacillus: anthracis – penicillin, doxycycline, ciprofloxacin, levofloxacin
· Bacillus: cereus – no abx
· Corynebacterium diptheriae – penicillin/erythromycin
Gram Negatives
Cocco-bacilli
· Haemophilus influenza – serious (cefotaxime/ceftriaxone) less serious (ampicillin/amoxicillin)
· Brucella – tetracyclines, rifampicin, aminoglycasides
· Legionella – erythromycin + rifampicin
· Pertussis – erythromycin in early stage
Diplococci
· Neisseria meningitides – ceftriaxone/penicillin G (close contacts Rifampicin)
· Neisseria gonorrhoea – ceftriaxone
Rods
Lactose positive
· E. coli – avoid abx
· Enterobacter
· Klebsiella -3rd generation cephalosporin
Lactose negative
· Bacteriodes fragilis – ceftriaxone
Lactose negative oxidase positive
· Vibrio cholera
· Pseudomonas – Pitazobactam or ciprofloxacin +gentamycin
· Campylobacter – fluoroquinolones/erythromycin
Lactose negative oxidase negative
· H. pylori – PPI + amoxicillin + clarythromycin
· Shigella – fluoroquinolones
· Salmonella – ciprofloxacin/ceftriaxone
· Yersinia – no abx
The above may be different depending on different local susceptibilities. Wecan make no
guarantee to their accuracy (though hopefully most are correct), and should be not be used as medical advice.
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by: Admin
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Word Count: 2817
Date: Thu, 23 Jun 2011 Time: 9:25 AM
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