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One hundred sixty two domestic fowls were examined for Toxoplasma.
infection by both indirect haemagglutination test for Toxoplasma antibodies and
inoculation of their brains intraperitoneally into mice for isolation of the parasite
The overall sero-positive rate (SPR) was 29 percent with the titers ranging
from 1:20 to 1:6400. The number of each species tested and their SPR were :
74 hens (27.0%), 35 roosters (37.1%), 25 turkeys (24. 0%), 12 pigeons (33.3%),
8 geese (50.0%) and 8 ducks (0.0%).
Altogether 12 strains (7.4%) of T.gondii were isolated from 5 species of
the birds. Five strains (6.7%) from the hens,one (2.9%) from roosters, four
(16.0%) from turkeys,one (8.3%) from pigeons,one (12.5%) from geese and none
from the examined ducks.
In one case Toxoplasma was isolated from a seronegative hen and the
rest were isolated from the sero-positive fowls. All of the isolated strains were
avirulent to mice.
Since in Iran consumption of underdone chicken -kebab is more or less
usual, Toxoplasma infections in domestic fowls may be taken into account as
one of the sources of human infection.
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