Baylisascaris procyonis: Difference between revisions
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Baylisascaris procyonis
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+ | *Nematode found in raccoon feces, known as the raccoon roundworm |
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+ | ==Background== |
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+ | ===Microbiology=== |
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+ | ===Life Cycle=== |
| + | *Direct life cycle involves raccoons (''Procyon lotor'') |
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| + | *Indirect life cycle can involve other vertebrates, including humans |
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| − | * Can cause [[Causes::neural larva migrans]], [[Causes::ocular larva migrans]], [[Causes::diffuse unilateral subacute neuroretinitis]], [[Causes::visceral larva migrans]], as well as asymptomatic infections |
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| + | *Present in North America, Europe, Japan, and possibly South America |
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| + | *Spectrum of infectious syndromes, including asymptomatic infection |
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| + | *[[Causes::Visceral larva migrans]], causing eosinophilia and symptoms associated with whichever organs are involved |
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| + | *[[Causes::Neural larva migrans]], which is essentially visceral larva migrans of the brain |
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| + | *[[Causes::Ocular larva migrans]], presenting with vision loss |
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| + | *[[Causes::Diffuse unilateral subacute neuroretinitis]] |
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| + | == Management == |
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| + | * Ocular larva migrans: laser therapy ± concurrent albendazole |
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| + | * Neurological larva migrans: albendazole and praziquantel for a long duration, ± corticosteroids |
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| + | ** Poor outcomes |
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Latest revision as of 15:32, 28 August 2020
- Nematode found in raccoon feces, known as the raccoon roundworm
Background
Microbiology
Life Cycle
- Direct life cycle involves raccoons (Procyon lotor)
- Indirect life cycle can involve other vertebrates, including humans
Epidemiology
- Eggs can be ingested from soil contaminated by raccoon feces
- The worm can infect a number of vertebrate animals
- Present in North America, Europe, Japan, and possibly South America
Clinical Manifestations
- Spectrum of infectious syndromes, including asymptomatic infection
- Visceral larva migrans, causing eosinophilia and symptoms associated with whichever organs are involved
- Neural larva migrans, which is essentially visceral larva migrans of the brain
- Ocular larva migrans, presenting with vision loss
- Diffuse unilateral subacute neuroretinitis
Management
- Ocular larva migrans: laser therapy ± concurrent albendazole
- Neurological larva migrans: albendazole and praziquantel for a long duration, ± corticosteroids
- Poor outcomes
Further Reading
- Update on Baylisascariasis, a Highly Pathogenic Zoonotic Infection. Clin Microbiol Rev/ 2-16;29(2):375-399. doi: 10.1128/CMR.00044-15
