Picture 16
This picture shows Escherichia coli (in red) cultured in MacConkey's agar. E. coli ferments lactose and therefore appears red in the neutral red indicator found in the culture medium.
Escherichia coli
Morphology: Gram negative cocci that are facultative anaerobes, ferment lactose, are commensals in human gastrointestinal tract
Route of transmission: Food borne
Investigations: Gram stain, organism cultured on MacConkey's agar
Diseases:
Urinary tract infections
Neonatal meningitis
Enteric infections (Traveler's diarrhoea)
Treatment:
Penicillin
Cefotaxime