Microbiology

Question 1

How is gonorrhoea diagnosed?

Answer 1

NAAT

Men: first pass urine sample or urethral swab
Women: endocervical or urethral swab

Question 2

What is the treatment of gonorrhoea?

Answer 2

Sensitivity unknown: 1g IM Ceftriaxone once only

Sensitivity known: 500mg PO Ciprofloxacin once only

Question 3

What are the most common organisms causing osteomyelitis?

Answer 3

Staph aureus

Strep pyogenes, haemophilus influenza, e.coli

In sickle cell: salmonella

Question 4

What is the treatment of osteomyelitis?

Answer 4

Flucloxacillin

MRSA suspected: Vancomycin

Question 5

What is the incubation period of varicella zoster?

Answer 5

10-21 days

Question 6

How is cryptococcus neoformans transmitted?

Answer 6

Inhalation of spores found in bird droppings (pigeon fanciers)

Question 7

What is the gram stain, shape and O2 requirements of e.coli?

Answer 7

• Gram negative
• Bacilli
• Facultative anaerobe

Question 8

E.Coli is most commonly associated with which infections?

Answer 8

• Uncomplicated UTI
• UTI associated with catheters
• Neonatal meningitis and sepsis (from the vaginal canal)
• Travellers diarrhoea
• Bloody diarrhoea associated with haemolytic uraemic syndrome

Question 9

What is the gram stain, shape and O2 requirements of Bordetella pertussis?

Answer 9

• Gram negative
• coccobacilli
• obligate aerobe

Question 10

What is the incubation period of Bordetella Pertussis?

Answer 10

7-10 days