Flashcards in CCDM TOPIC SCHISTOSOMIASIS Deck (7):
A blood fluke (trematode) infection with adult
male and female worms living within mesenteric or vesical veins of the host over a life span of many years.
Schistosoma mansoni and S. japonicum signs and symptoms:
diarrhea, abdominal pain and hepatosplenomegaly. S. japonicum can also cause CNS disease, with
How is Definitive diagnosis of schistosomiasis achieved?
Egg biopsy specimens, stool by direct smear, or in urine.
Mode of transmission:
Mode of transmission—Infection is acquired from water containing free-swimming larval forms (cercariae) that have developed in snails.
primary infections 2–6 weeks after exposure
Period of communicability
Not communicable from person to person; may spread the infection by discharging eggs in urine and/or feces into bodies of water for as long as they excrete eggs; it is common for human infections with S. mansoni and
S. haematobium to last in excess of 10 years