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PLOS Neglected Tropical Diseases | 2014

Serologic Prevalence of Toxoplasma gondii in Indian Women of Child Bearing Age and Effects of Social and Environmental Factors

Sarman Singh; Arshi Munawwar; Sugandhi Rao; Sanjay Kumar Mehta; Naba Kumar Hazarika

Background Seroprevalence and incidence of toxoplasmosis in women of child bearing age has remained a contentious issue in the Indian subcontinent. Different laboratories have used different patient recruitment criteria, methods and variable results, making these data difficult to compare. Aim To map the point-prevalence and incidence of toxoplasmosis in India. Material and Methods In this cross-sectional study, a total of 1464 women of fertile age were recruited from 4 regions using similar recruitment plans. This included women from northern (203), southern (512), eastern (250) and western (501) regions of India. All samples were transported to a central laboratory in Delhi and tested using VIDAS technology. Their age, parity, eating habits and other demographic and clinical details were noted. Results Most women were in the 18–25 years age group (48.3%), followed by 26–30 years (28.2%) and 31–35 years (13.66). Few (45) women older than 35 yr. were included. Overall prevalence of anti-Toxoplasma IgG antibodies was seen in 22.40%, with significantly more in married women (25.8%) as compared to single women (4.3%). Prevalence increased steadily with age: 18.1% in the 18–25 yr. age group to 40.5% in women older than 40 yr. The prevalence was high (66%) in those who resided in mud houses. Region-wise, the highest prevalence was observed in South India (37.3%) and the lowest (8.8%) in West Indian women. This difference was highly significant (P<0.001). Prevalence was 21.2% in East India and 19.7% in North India. The IgM positivity rate ranged from 0.4% to 2.9% in four study centers. Conclusions This pan-India study shows a prevalence rate of 22.4% with a wide variation in four geographical regions ranging from as low as 8.8% to as high as 37.3%. The overall IgM positivity rate was 1.43%, indicating that an estimated 56,737–176,882 children per year are born in India with a possible risk of congenital toxoplasmosis.


Journal of Geophysical Research | 2008

Identification of tropical convective tropopause and its association with cold point tropopause

Sanjay Kumar Mehta; B. V. Krishna Murthy; D. Narayana Rao; M. Venkat Ratnam; K. Parameswaran; K. Rajeev; C. Suresh Raju; Kusuma G. Rao


Journal of Geophysical Research | 2010

Variability of the tropical tropopause over Indian monsoon region

Sanjay Kumar Mehta; M. Venkat Ratnam; B. V. Krishna Murthy


Terrestrial Atmospheric and Oceanic Sciences | 2009

Validation of the COSMIC radio occultation data over Gadanki (13.48°N, 79.2°E): a tropical region.

Daggumati Narayana Rao; Madineni Venkat Ratnam; Sanjay Kumar Mehta; D. Nath; S. G. Basha; V. V. M. J. Rao; B. V. K. Murthy; Toshitaka Tsuda; K. Nakamura; C. Z. Cheng; Y. H. Kuo; Jinping Liu


Geophysical Research Letters | 2008

Observational assessment of the potential of satellite-based water vapor and thermal IR brightness temperatures in detecting semitransparent cirrus

K. Rajeev; K. Parameswaran; S. Meenu; S.V. Sunilkumar; Bijoy V. Thampi; C. Suresh Raju; B. V. Krishna Murthy; K. S. Jagannath; Sanjay Kumar Mehta; D. Narayana Rao; Kusuma G. Rao


Journal of Geophysical Research | 2011

Multiple tropopauses in the tropics: A cold point approach

Sanjay Kumar Mehta; M. Venkat Ratnam; B. V. Krishna Murthy


Geophysical Research Letters | 2007

Identification of tropopause using bending angle profile from GPS radio occultation (RO): A radio tropopause

D. Narayana Rao; M. Venkat Ratnam; B. V. Krishna Murthy; V. V. M. Jagannadha Rao; Sanjay Kumar Mehta; D. Nath; S. Ghouse Basha


Atmospheric Chemistry and Physics | 2015

Global temperature response to the major volcanic eruptions in multiple reanalysis data sets

Masatomo Fujiwara; T. Hibino; Sanjay Kumar Mehta; Lesley J. Gray; Dann M Mitchell; James Anstey


Geophysical Research Letters | 2011

Unusual enhancement in temperature and ozone vertical distribution in the lower stratosphere observed over Gadanki, India, following the 15 January 2010 annular eclipse

M. Venkat Ratnam; Ghouse Basha; M. Roja Raman; Sanjay Kumar Mehta; B. V. Krishna Murthy; A. Jayaraman


Journal of Atmospheric and Solar-Terrestrial Physics | 2010

Semitransparent cirrus clouds in the tropical tropopause layer during two contrasting seasons

S.V. Sunilkumar; K. Parameswaran; K. Rajeev; B. V. Krishna Murthy; S. Meenu; Sanjay Kumar Mehta; Asha Babu

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B. V. Krishna Murthy

Vikram Sarabhai Space Centre

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M. Venkat Ratnam

National Atmospheric Research Laboratory

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D. Nath

National Atmospheric Research Laboratory

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K. Parameswaran

Vikram Sarabhai Space Centre

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K. Rajeev

Vikram Sarabhai Space Centre

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M. Roja Raman

Sri Venkateswara University

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