Salmonella

Background

  • Salmonella enteritidis is a common cause of food borne disease outbreaks
  • Infection commonly from foodborne transmission
  • Associated with poultry/hen eggs, peanut butter
  • Seen in infants often due to cross-contamination in household

Clinical Features

  • Severity dependent on dose ingested
  • Symptoms within 8-72 hours
  • Course: Fever resolves within 48-72 hours; diarrhea resolves within 4-10 days
  • < 5% of patients develop bacteremia that is rarely complicated by endocarditis, osteomyelitis, or mycotic aneurysm.
  • Mortality < 0.5-1%

Differential Diagnosis

Acute diarrhea

Infectious

Noninfectious

Watery Diarrhea

Traveler's Diarrhea

Evaluation

  • Stool culture

Management

Supportive care

  • IVF

Antibiotics

  • Have not been shown to reduce duration of symptoms and not recommended in:[2][3]
    • Mild-moderate infection
    • Immunocompetent
    • Patients aged 2-50 years old
  • Antibiotics may have a role in patients with:[4]
    • Severe illness
    • IBD
    • Immunocompromised
    • Steroid use
    • < 3 months or > 65 years old
    • On hemodialysis
    • Sickle cell disease
  • Recommended regimens:[5]
    • Adults:
      • Levofloxacin (or other fluoroquinolone) 500mg daily x 7-10 days
      • Azithromycin 500mg daily x 7 days
      • Duration should be 14 days in immunocompromised
    • Children:
      • Ceftriaxone 100mg/kg/day divided into two doses x 7-10 days
      • Azithromycin 20mg/kg/day daily x 7 days

Antibiotic Sensitivities[6]

Category Antibiotic Sensitivity
PenicillinsPenicillin GR
Penicillin VR
Anti-Staphylocccal PenicillinsMethicillinR
Nafcillin/OxacillinR
Cloxacillin/Diclox.R
Amino-PenicillinsAMP/AmoxI
Amox-ClavS
AMP-SulbS
Anti-Pseudomonal PenicillinsTicarcillinS
Ticar-ClavS
Pip-TazoS
PiperacillinS
CarbapenemsDoripenemS
ErtapenemS
ImipenemS
MeropenemS
AztreonamX1
FluroquinolonesCiprofloxacinS
OfloxacinS
PefloxacinS
LevofloxacinS
MoxifloxacinS
GemifloxacinX1
GatifloxacinS
1st G CephaloCefazolinX1
2nd G. CephaloCefotetanX1
CefoxitinX1
CefuroximeX1
3rd/4th G. CephaloCefotaximeS
CefizoximeS
CefTRIAXoneS
CeftarolineS
CefTAZidimeS
CefepimeS
Oral 1st G. CephaloCefadroxilR
CephalexinR
Oral 2nd G. CephaloCefaclor/LoracarbefX1
CefproxilX1
Cefuroxime axetilX1
Oral 3rd G. CephaloCefiximeS
CeftibutenS
Cefpodox/Cefdinir/CefditorenS
AminoglycosidesGentamicinX1
TobramycinX1
AmikacinX1
ChloramphenicolS
ClindamycinR
MacrolidesErythromycinR
AzithromycinI
ClarithromycinR
KetolideTelithromycinR
TetracyclinesDoxycyclineI
MinocyclineI
GlycylcyclineTigecyclineS
DaptomycinR
Glyco/LipoclycopeptidesVancomycinR
TeicoplaninR
TelavancinR
Fusidic AcidR
TrimethoprimI
TMP-SMXI
Urinary AgentsNitrofurantoinS
FosfomycinS
OtherRifampinR
MetronidazoleR
Quinupristin dalfoppristinR
LinezolidR
ColistimethateX1

Key

  • S susceptible/sensitive (usually)
  • I intermediate (variably susceptible/resistant)
  • R resistant (or not effective clinically)
  • S+ synergistic with cell wall antibiotics
  • U sensitive for UTI only (non systemic infection)
  • X1 no data
  • X2 active in vitro, but not used clinically
  • X3 active in vitro, but not clinically effective for Group A strep pharyngitis or infections due to E. faecalis
  • X4 active in vitro, but not clinically effective for strep pneumonia

Table Overview

See Also

References

  1. Marx et al. “Cholera and Gastroenteritis caused by Noncholera Vibrio Species”. Rosen’s Emergency Medicine 8th edition vol 1 pg 1245-1246.
  2. Onwuezobe, I. A., Oshun, P. O., & Odigwe, C. C. (2012). Antimicrobials for treating symptomatic non-typhoidal Salmonella infection. The Cochrane database of systematic reviews, , CD001167.
  3. DuPont, H. L. (2014). Acute infectious diarrhea in immunocompetent adults. The New England journal of medicine, 16, 1532–1540.
  4. DuPont HL. Bacterial diarrhea. N Engl J Med 2009;361:1560-9.
  5. DuPont HL. Bacterial diarrhea. N Engl J Med 2009;361:1560-9.
  6. Sanford Guide to Antimicrobial Therapy 2014
This article is issued from Wikem. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.