الفهرس 
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Abstract
Toxoplasmosis is a common infection caused by the protozoan parasite T.gondii. The infection is mainly acquired by ingestion of food or water that is contaminated by mature oocysts shed by cats or by undercooked meat containing tissue cyst.It has been estimated that one third of the world population has been infected with T. gondii. The diagnosis of Toxoplasma infection is most commonly made by the detection of anti-Toxoplasma specific IgG and IgM antibodies. The determination of IgG antibodies to Toxoplasma gondii is used to assess the serological status to T. gondii and is indicative of an acute or latent infection. The detection of IgM antibodies to T. gondii could indicate an acute, recent or reactivated Toxoplasma infection. The diagnosis of the acute acquired infection during pregnancy is established by a seroconversion or a significant rise in antibody titers (IgG and/or IgM) in serial samples.This observational cross-sectional study was done in Tropical Medicine outpatient Clinic and Clinical Pathology department of Zagazig University Hospital, and including 159 healthy students coming to do clinical and laboratory evaluation before university attendance at student year 2017-2018.Students were subjected to full medical history and socio demographic data including :(age , sex, residence, marital status ,dealing with animals and type of animal either : cats, dogs, cows and poultry, eating fast food such as: burger, beef, lunchon and uncooked meat, dealing with soil, drinking non boiled milk and blood transfusion. Students were subjected to clinical examination (general and local including lymph node examination). and also investigations were done including Anti Toxoplasma IgG using ELIZA technique.