worms nd vectors

Trematodes

Clonorchis sinesis, Schistoma mansoni

C. sinensis

Chinese liver fluke (has a sucker)

how is C. sinensis aquired

raw/undercooked fish

MOT (C. sinsensis)

adults migrate to bile duct of liver and lay eggs

snail—> fish—→ human

how is Chinese liver fluke diagnosed?

eggs in stool

Cestodes (tapeworms)

T. saginata, T. solium, D. canium

how are tape worms acquired?

from raw/ undercooked meat … (ingested the eggs)

Tape worms have

scolex- hooks

proglottids- reproductive tract

cestodes can be diagnosed by

eggs in poop

nematodes

Enterobious vermicularis (pinworm)

how can you aqcuire pinworm?

daycares

diagnosis of pin worm?

egg tape on sample (perianal)

MOT pinworms

via inhalation/ swallowing microsopic eggs… live on surfaces

hookworms infecious properties

larvae infective, bore into intestinal lining

Ancyloma duodenale (canine)

no penetration

nectar americanus (human)

penetrate the skin, enters blood stream travels to lungs

Trichnalis spiralis (roundworm)

cyst form infective

ingested undercooked pork

T.spiralis affects

muscle tissue