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Fall 22: Parasites > 09. strongyloides > Flashcards

09. strongyloides Flashcards

1
Q

general characteristics of Metastrongylus sp.

A

bronchi and bronchioles of swine (lung worm)
bursa is well developed
not common in USA

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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2
Q

what test for Metastrongylus sp.

A

fecal float

pig lung worm

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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3
Q

treatment and control of Metastrongylus sp.

A

fenbendazole, ivermectin

limit access to intermediate host- earthworm

clean poop

lung worm in pigs

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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4
Q

Protostrongylus rufescens infect

A

smaller bronchioles of sheep and goats

lung worm of sheep and goats

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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5
Q

Muellerius capillaris infect what animal

A

lung of sheep and goat

lung worm

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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6
Q

Metastrongylus sp. infect

A

bronchi and bronchioles of pigs

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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7
Q

characteristics of Protostrongylus refescens

A

well developed bursa
most cases asymptomatic

smaller bronchioles of sheep and goats

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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8
Q

characteristics of Muellerius capillaris

A

well developed bursa
mostly asymptomatic

lung worm of sheep and goats

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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9
Q

lifecycle of Protostrongylus rufescens

A

indirect
no egg- released as L1 larva
intermediate host snail
DH: sheep and goats

same life cycle as Muellerius capillaris

smaller bronchioles of sheep and goats

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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10
Q

lifecycle of Muellerius capillaris

A

indirect
no egg- released as L1 larva
intermediate host snail
DH: sheep and goats

same lifecycle as Protostrongylus rufescens

lung worm of sheep and goat

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis

MAAPPMFC

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11
Q

best test for Protostrongylus rufescens

A

baermann Test
no eggs in stool, poop out L1 larva

plain tail

smaller bronchioles of sheep and goats

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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12
Q

best test for Muellerius capillaries

A

baermann test

no eggs, give birth to L1 larva

Same as P. rufescens

lung worm of sheep and goats

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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13
Q

what does Protostrongylus rufescens larva look like

A

plain tail

smaller bronchioles worm of sheep and goat

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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14
Q

what does Muellerius capillaris larva look like

A

kinded tail with accessory spine

lung worm of sheep and goats
indirect life cycle- give birth to live larva

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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15
Q

treatment and control of Muellerius capillaris

A

moxidectin in sheep
epriomectin in goats

limit access to IH (snails)

bronchiole worm of sheep and goats, live larve

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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16
Q

treatment and control of Protostrongylus sp.

A

Febendazole

limit access to snails (IH)

lung worm of sheep and goats- live larvae

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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17
Q

Parelaphostrongylus tenuis infect

A

deer

brain worm of white tailed deer

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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18
Q

general characteristics of Parelaphostrongylus tenuis

A

asymptomatic in brain of white tailed deer

but if in abnormal host: horse, cattle ect. will be 100% fatal!

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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19
Q

what are three parasites found in ruminants that give birth to live L1 larva

A

Muellerius capillaris- small bronchioles of sheep and goat
Protostrongylus spp- (P. rufescens) lung worm of sheep and goat
Dictyocaulus spp(D. viviparus)- cattle lung worm

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20
Q

lifecycle of parelaphostrongylus tenuis

A

indirect
IH: snails
DH: white tailed deer

no eggs- release L1 larva
L3 move from digestive tract up spinal nerves to the brain
L1 coughed up and swallowed and pooped out

brain worm of white tailed deer

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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21
Q

diagnosis of parelaphostrongylus tenuis

A

presumptive- no real test
based off symptoms- neuro issues and exposure to white tailed deer

no treatment

brain worm of white tailed deer

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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22
Q

aelurostrongylus abstrusus infect

A

lungs of cats and rarely dogs

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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23
Q

characteristics of Aelurostrongylys abstrusus

A

lung worm of cats and sometimes dogs

reduced bursa

most asymptomatic
mild- cough and anorexia
heavy- fatal, cough, dyspnea, polypnea

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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24
Q

symptoms of Aelurostrongylus abstrusus

A

most asymptomatic
mild- cough and anorexia
heavy- fatal, cough, dyspnea, polypnea

lung worm of cats +- dogs

Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis
MAAPPMFC

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25
lifecycle of Aelurostrongylus abstrusus
indirect no egg- live larva IH (snail) paratenic host (birds and mice) or ingest L3 larva grow in lungs | lung worm of cats and *dogs ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
26
test for Aelurostrongylus abstrusus
baermann test- live L1 in poop S shaped curve and dorsal spine | lung worm of cats ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
27
what do L1 of Aelurostrongylus abstrusus look like
severe kink- S shaped dorsal spine | lung worm of cats- live L1 ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
28
what are four L1 found in poop of cats and dogs
**Crenosoma vulpis**- bronchioles, trachea of dogs, foxes, wolf, racoon and wild carnivors **Angiostrongylus vasorum**- pulmonary arteries and lung of dogs, coyotes and foxes **Filaroides spp**.- canine tracheal and bronchial nodular worm **Aelurostrongylus abstrusus**- cat and dogs lung worm
29
treatment of Aelurostrongylus abstrusus
fenbendazole + prednisone (lung lesions) limit access to IH(snails) PH (mice and birds) | lung worm of cats and * dogs ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
30
angiostrongylus vasorum infect
pulmonary arteries and lungs of dogs, coyotes and foxes french heartworm | not common in america ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
31
symptoms of angiostrongylus vasorum
French heartworm cardiopulmonary disease clotting disorder ocular and CNS disease | pulmonary arteries and lungs of dogs, coyotes and foxes ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
32
lifecycle of angiostrongylus vasorum
indirect no eggs- live L1 IH (snails and other mollusks) PH (frogs) DH( dogs, coyotes and foxes) | pulmonary arteries and lungs of dogs, coyotes and foxes ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
33
test for angiostrongylus vasorum
baermann test lung worm- no eggs- Live L1 larva in the poop Xray, antigen test and PCR cephalic button on the anterior end, severe S shape kink, dorsal spine | french heartworm- pulmonary arteries + lungs of dogs, coyotes and foxes ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
34
angiostrongylus vasorum | pulmonary arteries + lungs of dogs, coyotes and foxes- french heartworm ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
35
Aelurostrongylus abstrusus | lungs of cats and * dogs ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
36
Parelaphostrongylus tenuis | brain worm of white tailed deer ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
37
Protostrongylus rufescens or Muellerius capillaris | P.R- smaller bronchioles of sheep + goats M.C- lungs of sheep + goats ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
38
what does L1 of Angiostrongylus vasorum look like?
cephalic button on the anterior end, severe kink (S shaped curve) and dorsal spine **Not common in USA** (looks similar to A. Abstrusus- curve and dorsal spine) | pulomary arteries + lung of dogs, coyotes and foxes- french heartworm ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
39
treatment for angiostrongylus vasorum
ivermectin routine preventives do not work! prevent hunting- paratenic host (frog), IH (molluskan) | French heartworm- pulmonary arteries + lungs of dogs, coyotes and foxes ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
40
Filaroides osleri infect
canine tracheal and bronchial nodular worm ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
41
symptoms of Filaroides osleri
wart like, granular or hemorrhagic nodules in trachea and bronchi of dogs and other canids dry cough with exercise and exposure to cold air respiratory distress in young animals PPP 5-6 months | tracheal and bornchial nodular worm of canines ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
42
what causes dry cough with exercise or exposure to cold air in dogs?
Filaroides osleri ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
43
PPP of Filaroides osleri
5-6 months | nodules in trachea and bronchi of canids ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
44
Filaroides hirthi infect
lung parenchyma of dogs and other canids ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
45
clincial signs of Filaroides hirthi
focal granulomatous reaction fatal in immunodeficent animals PPP 32-35 days (much faster then Fiaroides osleri 5-6 months) | canine lungworm ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
46
which Filaroides that effect dogs has a faster PPP?
Filaroides hirthi - 32-35 days Filaroides osleri- 5-6 months ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
47
lifecycle of Filaroides spp.
direct infectious at L1! no eggs- Live L1 in feces L1 passed in poop or by **saliva** | lung worm of dogs ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
48
how to pass Filaroides spp.
ingestion of vomit, lung tissue or feces maternal grooming Live L1 in stool | lung worm of canine ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
49
Filaroides spp L1 already infectious no egg- live L1 spread in poop, vomit and saliva | lung worm of dogs ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
50
test for Filaroides spp.
Fecal exam- look for L1 larva- usually already dead so baermann test won't work Bronchoalveolar lavage- wash out lungs where worm lives and breeds Centrifugal Zinc Flotation- detect L1 in feces severe kink (S shaped curve) NO dorsal spine ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
51
what does L1 of Filaorides spp. look like
No dorsal spine severe S shaped kink | lung worm of dogs ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
52
compare L1 of Crenosoma vulpis A. abstrusus A. vasorum Filaroides spp.
**Crenosoma vulpis**- C shaped when killed, NO S shaped kink and NO dorsal spine **A. abstrusus**- dorsal spine, S shaped kink **A. vasorum**- cephalic button on anterior end, dorsal spine, S shaped curve (not found in USA) **Filaroides spp**.- NO dorsal spine, S shaped kink ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
53
treatment of Filaroides spp
very hard to treat ivermectin isolate positive dogs C-section and foster mothers | lung worm of dogs spread by grooming! ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
54
Crenosoma vulpis infect
bronchioles, bronchi, and trachea of dogs, foxes, wolfs, racoons, and other wild carnivors ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
55
symptoms of Crenosoma vulpis
nonfatal chronic cough pneumonia can minic allergic reaction and be misdiagnosed | Bronchioles-trachea of dog, fox, racoon ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
56
adult Crenosoma vulpis look like
cuticle with crenated folds rare in USA ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
57
Crenosoma vulpis | bronchioles, bronchi, and trachea of dogs, foxes, wolfs, racoons ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
58
life cycle of crenosoma vulpis
indirect DH: domestic and wild carnivores IH: snails infective at L3 no eggs: live L1 PPP 19 days | bronchioles-trachea of dogs and wild carnivores ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
59
test for Crenosoma vulpis
Baermann- detect L1 in poop C shape when killed No Kink, No dorsal spine | bronchioles-trachea dogs, fox, wolf, racoon ## Footnote Metastrongylus: Meta, aeluro abstrusus, angio, Proto refescens, parelaph tenuis, muellerius capillaris, filaroides, crenosoma vulipis MAAPPMFC
60
intestinal threadworms are
Strongyloides spp | small intestine of domestic animals and human
61
female strongyloides can be ---
parthenogenetic asexual reproduction - no male needed
62
symptoms of Strongyloides spp.
heavy infection- enteritits and repirartory signs sever or fatal in immunocompromised host | small intestine of domestic animals and human- intestinal threadworm
63
Strongyloides stercoralis infect
dogs and humans zoonotic ## Footnote intestinal threadworm
64
Strongyloides tumefaciens infect
cats rare in us
65
Strongyloides ransomi infect
pigs
66
Strongyloides westeri infect
horses
67
Strongyloides papillosus infect
cattle
68
spread of strongyloides in humans
**Internal autoinfection**: L3 reinvade the host by penetrating the bowel wall **External autoinfection**: L3 reinvade the host by penetrating the perianal skin | intestinal threadworms
69
lifecycle of strongyloides spp.
direct domestic animal or human host No egg- poop has live L1 **Homogonic cycle**: inside host- no free living adult stage in environment females are asexual- will reinvade (autoinfection) **Herterogonic cycle**- male and female adult worms in the environment - invade by skin penetration of L3 PPP 1 week | threadworm of intestine
70
which lifecycle of strongyloides has a male and female adult worm?
hertergonic cycle (free living in environment) L3 will invade host by skin penetration ## Footnote intestinal threadworm- zoonotic
71
test for Strongyloides stercoralis
baermann test detect L1 in poop Coproculture/fecal culture- used to find L3 L1- look like hatched hookworm- straight tail no accessory spines L3- long esophagus ## Footnote intestinal threadworm- zoonotic
72
L1 and L3 strongyloides stercoralis look
L1- straight tail lacking accessory spines- genital enlargment L3- long esophagus ## Footnote intestinal threadworm- no egg, live L1
73
treatment of Strongyloides
ivermectin wear shoes- skin penetation clean up poop ## Footnote intestinal threadworm- live L1 in poop
74
strongyloides egg
smaller then strongid type egg contains a larva 50-35microm

Fall 22: Parasites (32 decks)

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