This book in your hand is the result of my research conducted during my internship period. The book explores majorly the correlation of the different risk factors and toxoplasmosis in pregnant women of chitwan district of Nepal.This is the first work on toxoplasmosis in animals in Nepal. The ELISA test of serum samples of slaughtered pigs were done from different slaughter house of the Chitwan district. The serum samples of pregnant women were taken from different health post and primary health post of chitwan district. All the test were conducted in the "National zoonoses and Food Hygiene research center, Tahachal, Kathmandu.