Immuno/ID Flashcards
What type of virus is HIV and what is the most common mode of transmission
Double stranded RNA
Sex
Which organisms are associated with the following sputum types?
- Rust coloured
- Green coloured
- Red-currant jelly
- Foul smelling/bad tasting
- Strep pneumoniae
- Haemophilus, Pseudomonas, pneumococcal
- Klebsiella
- Anaerobes
Chagas disease organism and presentation
Trypanasoma Cruz
Bite by Reduviid bug, forms nodule/scar
10-20 years later:
GI Sx: dysphagia, bloating, constipation
Cardiac manifestations: arrhythmia, HF, arrest
Yellow fever Px and Dx test
Acute phase: fever, myalgia, appetite loss, N+V for 3-4 days
SLOW PULSE in context of fever (60bpm)
Dx: ELISA
Weil’s disease route, organism, Px and Rx
Spread by infected rat urine
Leptospira interrogates
Abrupt fever, myalgia, cough, CP
+/- haematuria, jaundice, meningitis, renal failure, uveitis
Rx: IV Pen or Amox
River blindness organism and Px
Onchocerciasis
skin changes itching nodules vision change SSA NB. can take years for Sx to occur
Name some live vaccines
MMR Oral typhoid BCG Yellow fever Rotavirus Polio INTRANASAL influenza (Paeds)
Teenage vaccinations
12-13yo: HPV
12-18yo: tetanus, diphtheria, polio “3in1 booster” + Men ACWY
Which antimicrobial can cause drug-induced lupus (DLE) and which antibody tends to be +ve?
Isoniazid
Anti-histone
(Procainamide and hydrazine can also cause DLE)
Antibodies in dermatomyositis
Anti-Jo
Anti-Mi2
Antibody in scleroderma (aka limited systemic sclerosis)
And what parts of body are affected?
~CREST
Anti-centromere
Face, hands, feet
Which virus is associated with nasopharyngeal cancer?
EBV
Type 1 hypersensitivity definition and an example
IgE mast cell mediated allergic reaction releasing histamine
eg. asthma, anaphylaxis, allergic rhinitis
Type 2 hypersensitivity definition and an example
Antibody-dependent reaction binding blood elements
eg. Goodpasture’s, ABO, AIHA
Type 3 hypersensitivity definition and an example
Immune-complex mediated ie. antibody binds antigen, deposit in tissues
eg. SLE, RA, EAA
Antibodies in antiphospholipid syndrome
Anti-cardiolipin
Lupus anticoagulant
Anti-b2-glycoprotein
Antibody in diffuse systemic sclerosis?
And what parts of body are affected?
~CREST
Anti-topoisomerase
Diffuse skin involvement + organ fibrosis
HIV PEP indications
- Sexual intercourse with high risk person with unknown infection status
- Occupational exposure to potential HIV infected bodily fluids
NB. Not indicated if HIV positive person on ART with undetectable viral load for 6months
Returned from Ecuador, develops fever, hepatosplenomegaly, LNopathy, neuro symptoms.
What is the organism?
What is the vector?
Treatment?
Bartanella bacilliformis
Sandfly
Penicillin (occasionally Chloramphenicol)
Sleeping sickness organism and vector?
Trypanosoma brucei
Tsetse fly
Incubation period for cholera
0-5 days
Which antimicrobial causes red urine?
Rifampicin
Type 4 hypersensitivity definition and an example
Delayed-type. T-cell mediated ie. does not involve antibodies
eg. contact dermatitis, Mantoux test, coeliac
Contraindications for rabies vaccine
Previous reaction to rabies vaccine
NOTHING ELSE!
Rocky Mountain spotted fever organism and vector and management?
Rickettsia rickets (most commonly)
Ticks
Rx: Doxy
What is DiGeorge syndrome?
Selective t-cell deficiency due to failure of development of third and fourth pharyngeal pouches
Example of a primary B-cell deficiency and what does it make you predisposed to?
Selective IgA deficiency (most common)
Prone to encapsulated Gram +ves