zoonotic cestode infections:emphasis on Neurocysticercosis and Echinococcosis

Neurocysticercosis cause of epilepsy....and echinococcosis cause of liver cyst and lung cyst.

1. M . . V . S c h h o l S . a o c V r o h S c . V l
l c l . V o . h l S c h o h . l c l V a
a S c a . l c l Zoonotic cestode infections:
Emphasis on Neurocysticercosis and
Hydatidosis
Aquil Mohmad
M-5527
M.V.Sc Scholar

2. Diseases and infections that are naturally transmitted between
vertebrate animals and human.
(WHO)
Cestode zoonoses are emerging and spreading worldwide and are
classified as neglected zoonotic diseases .
 Asia currently has the greatest burden of cystic echinococcosis (CE)
and cysticercosis   .
( Xiaoning et al 2013)

3. Sparganosis
Hymenolepises
Coenuriasis
Diphyllobothriasis
Cysticercosis

Echinococcosis
Bertieliasis
Dipylidiasis
Inermicapsifer infection

4.  First described by Patrick Manson
in 1882 from china
Caused by plerocercoid larvae of
Pseudophyllidea tape worms of the
genus Spirometra

5. .

Painful subconjunctival horseshoe
shaped swelling around the limbus in
the superior part of the bulbar
conjunctiva with surrounding chemosis
and congestion
( R. Nath  2015)
 larvae can lodge in the brain
parenchyma or spinal cord producing
seizures, headache, hemiparesis,
paralysis even death .

6. Spargana
worms

7. .
Theodor Bilharz (1851) first
discovered H. nana in small
intestine of an Egyptian male

11. In India it is an important emerging disease of the
central nervous system second to tuberculosis
( B.B. Singh 2010 )
It is the single most common cause of epilepsy in
the developing countries
It is common in communities where pigs are allowed
to roam freely and the basic sanitary facilities are
lacking .
( K N Prasad et al 2008)

14. Areas suggested to be
highly endemic
Areas suggested to be
moderately
Areas with no or very few
cases
Areas with no available
report

15. Scolex
Adult Taenia
solium
Three most common sites of
infection in human (primary
host)
1. Brain (Neurocysticercosis)
2. Muscles (Cysticercosis)
3. Intestine (TaeniasisEggs
Onchosphere
hatches, penetrate
intestinal wall and
ciruculate to
musculature of pig
(intermediate host
Ingestion of raw
vegetables,fruits, salad
contaimnated with eggs
Consumption of
infected pork
Cysticerci
1
2
3

17. (Pratibhi, 2011)

25. (Monika Sharma et al , 2013 )

26. (Monika Sharma ;2013)

27.  Sheep strain (G1) is the most cosmopolitan form
and is that most commonly associated with human
infections.

28. Usually one cyst present
Cyst location
◦60 to 70% in liver
◦20 to 25% in lungs

31. WHO Type Cyst Morphology
Unilocular anechoic lesion with double line
containing hydatid sand.
Multiseptated rosette like honeycomb cyst
Cyst with detached membrane (waterlily sign)
Cyst with daughter cysts in solid matrix
Cyst with heterogenous hypoechoic
hyperechoic contents.
no daughter cysts
Solid and calcified wall
CE 1
CE 2
CE 3A
CE 3B
CE 4
CE 5

37. Thank you
Thank you