Infectious diseases / sexual health

Question 1

Herpes

Answer 1

Viral PCR swab from lesion

Question 2

Epstein-Barr virus

Answer 2

Monospot test

Question 3

Mumps

Answer 3

First line - salivary mumps IgM

Question 4

Rubella

Answer 4

Rubella-specific IgM serum antibody

Question 5

Primary TB on CXR

Answer 5

Patchy consolidation, pleural effusions, hilar lymphadenopathy

Question 6

Reactivated TB in CXR

Answer 6

Patchy consolidation with cavitation (typically in upper zones, R>L)

Question 7

Immune tests for TB

Answer 7

Mantoux
TB quantiferon ELISA

Question 8

Active TB test

Answer 8

Culture - using Ziehl-Neelsen stain, red on blue background

Question 9

Throat swab location

Answer 9

Posterior nasopharynx

Question 10

Gastroenteritis

Answer 10

Stool MC&S

Question 11

Pneumonia from hotels/aircon

Answer 11

Legionella

Question 12

Pneumonia with erythema multiforme

Answer 12

Mycoplasma pneumoniae

Question 13

HIV - what CD4 and viral load are good?

Answer 13

Viral load - undetectable
CD4 - higher is better (<200 is AIDS)

Question 14

Test for chlamydia

Answer 14

Endocervical swab/first-catch urine (men) NAAT

Question 15

Test for gonorrhoea

Answer 15

Do NAAT first, then charcoal swab for MC&S for ABx guidance

Question 16

Test for syphilis

Answer 16

Antibody testing, confirm with dark ground microscopy

Question 17

Foreign travel with diarrhoea

Answer 17

Do ova, cysts and parasites