Studies conducted in children of rural and urban location in and around Chennai have reported the prevalence of intestinal parasitic diseases ranging from 60 to 91%  among which Ascaris
lumbricoides was the most common helminthic parasite detected (52.8%) followed by Trichuris trichiura (45.6%).
Confirmed cases were among persons who had excreted in stool at least one worm laboratory-identified as Ascaris
A 1 cm x 1cm perforation was found in the prepyloric region of stomach and two live Ascaris
were seen protruding through the perforation (Figs 1 and 2).
The appearance of an ascaris
worm attached to the nasogastric tube alerted us to this as a possible cause of the pancreatitis (Fig.
lumbricoides is one of the causes of blood loss anaemia.
had six cases of heavy infection and twelve cases of moderate infections.
The stool clearance rates for the various types of parasites were 71%-100% (Ascaris
lumbricoides [11 of 13], Entamoeba histolytica [5 of 7], Necator americanus [4 of 5], Strongyloides stercoralis [4 of 4], Trichuris trichiura [3 of 3], Giardia lamblia [2 of 2], and Taenia saginata [1 of 1]).
The PFs found most often in soil samples from Faxinal and Ivai were: eggs of Ascaris
Various genera of Protozoa (including Entamoeba, Endolimax, Iodamoeba, Balantidium, Giardia and Blastocystis), nematodes (such as Strongyloides, Trichuris, Ascaris
, Enterobius, Trichostrongylus and hookworms) and one trematode (a dicrocoeliid) were identified.