Salmonella Typhimurium

STRUCTURE AND PHYSIOLOGY
  • I am a pathogenic Gram-negative bacterium
  • I am rod-shaped and aerobic in nature and am predominately found in the intestinal lumen.
  • Lipopolysaccharides (LPS) of my outer membrane contribute to my toxicity and hence I am protected from the external environments.
TRANSMISSION AND DISEASE
  • I am responsible for gastroenteritis and typhoid fever in humans and other mammals. However, in mice, I produce symptoms resembling typhoid fever in humans, which are then studied for developing vaccines.
  • I spread infection mostly through contaminated water and food.
  • However, most importantly, I also spread infections through surfaces that are not kept clean, unwashed hands after using the toilet or even after changing a baby’s diapers.
  • An individual with contaminated hands can easily pass on the infection to other people through direct or indirect contact.
  • Therefore, maintaining good hygiene is essential in order to prevent getting infected by me.
TREATMENT OF INFECTION
  • Symptoms of infections normally disappear without treatment after a week. However, in some cases, patients may be required to take in plenty of fluids in order to prevent dehydration.
  • Furthermore, doctors may also prescribe antibiotics against me if symptoms are severe, or if my presence is detected in the bloodstream.
DISINFECTION
  • Due to my regular occurrence and pathogenicity, I am a common bacterium for measuring disinfectant efficacy.