Microbio - Fever in the returning traveller Flashcards

1
Q

Which is the most common cause of fever in a returning traveler?

A

Malaria

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2
Q

2 types of Typhoid

A

Salmonella typhi and salmonella paratyphi

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3
Q

What sort of history may patient with typhoid present with?

A

Travel to India; transmitted by food and water

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4
Q

Typhoid symptoms

A

Constipation, rose spots, relative brady

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5
Q

Salmonella typhae syx

A

Similar to typhoid but diarrhoea w mucus/blood instead of constipation

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6
Q

*Typhoid treatment

A

IV ceftriaxone then PO azithromycin

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7
Q

Typhoid complication

A

GI perforation (infection of Peyer’s patches)

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8
Q

What is the pathogen causing Dengue?

A

RNA flaviviridae virus

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9
Q

What is dengue spread by?

A

Aedes mosquito

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10
Q

What sort of history may patient with Dengue present with?

A

South East Asia travel (<21 days ago bc short incubation)

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11
Q

Dengue symptoms

A

Fever, myalgia, rash

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12
Q

Dengue treatment

A

self-limiting

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13
Q

Dengue complication

A

Dengue haemorrhagic fever / Dengue shock syndrome - if infected with a different serotype to what pt had before (rare in travellers)

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14
Q

4 types of Malaria

A
  1. Malaria Falciparum
  2. Plasmodium vivax
  3. Plasmodium ovale
  4. Plasmodium malariae
  5. Plasmodium knowlesi
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15
Q

Which type of malaria is most severe?

A

Malaria falciparum

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16
Q

What is the pathogen causing malaria?

A

Protozoal infection (Plasmodium spp.)

17
Q

What spreads malaria?

A

female Anopheles mosquito

18
Q

What sort of history may a patient with Malaria present with?

A

Travel to Africa/Asia/ South America

  • Tertian fever + RIGORS (48hrly)
  • Hepatosplenomegaly, anaemia
19
Q

Symptoms of severe Malaria

A
  • Impaired consciousness/seizures
  • Renal/hepatic impairment
  • Shock
  • Spontaneous bleeding
20
Q

Malaria Ix

A

Thick (confirm malaria) and thin (confirm species) blood films

21
Q

Malaria Mx

A

IV artesunate

22
Q

Entamoeba histolytica presentation

A

Fever, bloody diarrhoea, RUQ mass (abscess)