Parasitisism - Human Implications

Question 1

Clinical signs of infection with borrelia burgdoferi (4)

Answer 1

Neurological signs
Target rash
Fever
General flu-like symptoms

Question 2

Enchinococcus transmission to humans

Answer 2

Ingestion of intermediate host esp. liver (sheep/pigs/goats)

Hydatid cyst develops in liver or lungs

Question 3

Exchinococcus clinical signs (3)

Answer 3

May be asymptomatic for long period

Liver:
- abdominal pain
- nausea and V+
Lung:
- chronic cough and dyspnoea
- chest pain

Question 4

Toxoplasma transmission to humans

Answer 4

Infected cat sheds for 2-3wks
Sporulated oocysts aerosolised
Inhaled by human or intermediate host (livestock)
Can be re-aerosolised during parturition

Question 5

Toxoplasma clinical signs (3)

Answer 5

Mild flu-like symptoms in healthy humans

If immunosuppressed:

• neurological signs
• resp. And cardiac disease

If pregnant:

• miscarriage/still-birth/birth defects
  
  • congenital: CNS and ocular disorders

Question 6

Mange causal agents and transmission to humans

Answer 6

Burrowing mites

Transmitted through close contact or contaminated fomites

Question 7

Clinical signs of mange in humans (4)

Answer 7

Affects warm skin folds
Inflammation and blistering
Pruritis
Burrowing tracks

Question 8

Toxocara transmission to humans

Answer 8

Via ingested of faecal matter

Question 9

How does toxocara affect body

Answer 9

Migrate to tissues:

• viscera
• ocular
• neural

Symptoms depend on migration