Enterobacteriaceae

Enterobacteria

• Found in the gut
• Facultatively anaerobic
• aka Coliforms
• Gram negative bacilli

Escherichia Coli

Info

• Intestinal commensal
• Gram negative
• Grow on MacConkey's agar (contains bile salts)
• Lactase - pink colonies on MacConkey's

Disease

• UTIs
• Food poisoning
• Meningitis in neonates

Treatment

• Penicillin resistant usually
• Otherwise, cephalosporins, trimethoprim, ciprofloxacin or aminoglycosides

Salmonella

About

• Eggs + Chicken
• Normal animal commensals
• Do not produce pink colonies on MacConkey

Diseases

• Food poisoning
• Typhoid + paratyphoid
• Enteric fever

Treatment

• Self limiting. Only treat if really bad – damage already done
• If they have enteric fever, give ciprofloxacin

Shigella

• Causes diarrhoea
• Self limiting
• Not usually too bad

Klebsiella

• Hospital acquired
• UTI

Proteus

• UTI