40598973 Nematodes and Cestodes Outline 120820094006 Phpapp01

NEMATODES (roundworms) Organi Organism

Common name

Distinct Characteristics

Habitat

MOT

Infective Stage

Diagnostic Stage

Host

Ascaris lumbricoide s

Human Roundwo rm

Small intestine

Ingestion of fertilized egg (oral-fecal)

Fertil Fertilize ized d oa

!nfert !nfertili ilized zed andd fertilized oa

'nterobius ermicularis

Human pinworm

Largest nematode; presence of albuminoid coat in fertilized egg olorless *s#aped oa

olon

+a

Anclostom a duodenale

+ld world #oo.wor m

/ pairs of entral teet#; c-s#aped

Small intestine

In#alation of oa; oralfecal S.in penetration

2ecator americanus

2ew world #oo.wor m Human t#readwo rm

3 pair of cutting plated; s-s#aped

Small intestine

Strongloid es stercoralis  5ric#ostron  5ric#ostron glus spp6

 5ric#uris tric#iura

apillaria p#ilippinens is

 5ric#enella spiralis

Human w#ipwor m

7arrel4football s#aped oa; / prominent polar plugs &eanut-s#aped oa; / flat polar plugs

por.w por.worm orm Found Found in nurse nurse cell; smallest

Diagnosis

Pathogeni city

Treatment

DH" DH" #uman

$ato tec#ni%ue

Ascariasis (&)

Albendazole

+a

DH: # DH: #u uman

Scotc# tape swab

'nterobiasi s

,ebendazole

&ruritus ani

Filariform larae

+a

DH: #uman

ulture of larae

Albendazole

1round itc#

S.in penetration

Filariform larae

+a

DH" DH" #uman

Anclostomiasi s (0a.ana disease) (&) *irect fecal smear4 culture

2ecatoriasis (!ncinariasis ) (&)

Albendazole

1round itc#

Small intestine

S.in penetration

Filariform larae

R#abditiform larae

*irect fecal smear sputum sample

Strongloidia sis

Albendazole Iermectin  5#iabendazole

Small intestine

Ingestion of filariform larae; s.in penetration +ral-fecal

Filariform larae

+a

DH: #uman (ma be dogs and cats) DH: cattle s#eep etc IN: #uman IN: #uman

F ec ec al al s me me ar ar

tr ic ic #o #os tr tro ng ng liasis

 5#iabendazole Fenbendazole Iermectin ,ebendazole

'mbronated oa

'mbronated and unmebronat ed oa 'mbronated or unembronat ed oa

DH: #uman DH: #uman

8inc sulfate floatation

DH: #uman Fis#-eating birds IH: Fis# IH: Fis# (bagsic bagsang birut) DH: #uman RH: pig

Stool analsis intestinal biops

, us us cl cl e bi bi op ops 

olon

Small intestine

Ingestion of raw or undercoo.ed fis# (bagsic bagsang birut)

'mbronated oa

S.eletal muscle

Ingestion of raw or

'ncsted larae

'ncsted larae

Vector

 5ric#uriasis

Clinical Manifestat ions

Lara currens

Albendazole

&rolapsed of t#e rectum

api apilla llari rias asis is

Albe Albend ndaz azol ole e ,ebendazole

Initial" borborgmi and ague abdominal pain

5r ic ic #i #i no no si si s

5 #i #i ab abe nd nd az az ol ol e e ,ebendazole

2S and #eart

nematode

tissue

undercoo.ed meat

Dogs"transm ammar transplacenta l Hman:Inge stion of embronated oa Cats " transmamma r Hman " Ingestion of embronated oa *rin.ing of contaminated water (wit# infected copepods) Ingestion of undercoo.ed infected snails and fis# and infected egetables; ingestion of rat feces Ingestion of undercoo.ed infected snails; ingestion of rat feces Ingestion of infected raw or

 5o9ocara canis

*og roundwor m

Small intestine

 5o9ocara cati

Feline roundwor m

Small intestine

*rancuncul us medinensis

1uinea worm

Angiostrong lus cantonensis

Rat lungworm

 5riangular mout# wit# sclerotized plate

Abdomin al tissue; lower limbs

Lac.s buccal capsule; adult female s#ow red digestie organ

7rain SF ees

Angiostrong lus costaricensi s

+ral opening surrounded b  small lips

,esente ric arteries in ileocecal region

1nat#ostom a spinigerum

7ulbous #ead wit# a pair of lateral lips surrounding

#uman

damage pneumonia meningits pleuris etc

'mbronated oa

Larae

DH: dogs PH: #uman

'LISA4'IA 0estern-7lot analsis

 5o9ocariasis

Dogs: Anti#elmint#ics Hmans: Albendazole

:isceral lara migrans +cular lara migrans

'mbronated oa

Larae

DH : dogs PH : #uman

'LISA4'IA 0estern-7lot analsis

 5o9ocariasis

Cats " Anti#elmint#ics Hmans: Albendazole

:isceral lara migrans +cular lara migrans

Larae

Adult female worm

DH: #uman IH: water fleas or copepods

0ater fleas or copepod s

*irect obseration

*racunculiasi s

Stic.; no anti#elmint#ic treatment

7lister formation

L

L

DH: rat IH: snails IncH: #uman PH: prawn crab

Snails

5 or ,RI SA2 I,,!2+-&R

Angiostrong liasis

Surgical operation

'osinop#ilic meningitis

L

L

snails