Microbiology

Question 1

Kids

Answer 1

Rotavirus

Question 2

All ages, faecal oral, “winter vomiting bug”, short intubation, lasts 2-4 days, highly infectious. Stool PCR. Hydration is key

Answer 2

Norovirus

Question 3

Most common bacterial food poisoning, long intubation (5-14days), bloody diarrhoea, rarely outbreaks. Poultry. Erythromycin. Gram negative microaerophilic small curved bacilli. Stool culture.

Answer 3

Campylobacter

Question 4

Outbreaks. Medium intubation. Diarrhoea, vomiting and fever. Different antigens. Poultry, meat, raw egg. Can cause Typhoid fever. Stool Culture.

Answer 4

Salmonella

Question 5

Faecal oral, long intubation 1-7 days. Produces Verotoxin. Suspect in bloody diarrhoea. High risk of person to person spread. Can cause HUS. Most common cause of renal failure in children

Answer 5

Ecoli 0157

Question 6

Colonises upper small bowel to produce diarrhoea and malabsorption. Infection spread by CYSTS in normal drinking water. Microscopy- examine stool for ova and cysts

Answer 6

Giardiasis

Question 7

Investigations for parasites

Answer 7

Microscopy

Question 8

Investigations for Bacterial cause

Answer 8

Campylobacter+ Salmonella: Stool Culture

Ecoli 0157: Stool Toxin

Question 9

Investigations for Viral cause

Answer 9

Stool PCR

Question 10

Investigations for Parasite cause

Answer 10

Microscopy

Question 11

Long intubation periods

Answer 11

Campylobacter, Ecoli 0157

Question 12

Medium intubation period

Answer 12

Salmonella

Question 13

Short intubation period

Answer 13

Norovirus