Publications of Dr. Rajiv Sarkar

2015

  • Lazarus RP, Ajjampur SS, Sarkar R, Geetha JC, Prabakaran AD, Velusamy V, Naumova EN, Ward HD, Kang G. Serum Anti-Cryptosporidial gp15 Antibodies in Mothers and Children Less than 2 Years of Age in India. Am J Trop Med Hyg. 2015 Nov 4;93(5):931-8. PMID: 26304924.
  • Kompithra RZ, Sarkar R, Mathew LG, Muliyil J, Kang G. Study of common illnesses before and after vaccination: a risk-interval approach. Indian Pediatr. 2015;52:933-8.
  • Rogawski ET, Westreich DJ, Adair LS, Becker-Dreps S, Sandler RS, Sarkar R, Kattula D, Ward HD, Meshnick S, Kang G. Early Life Antibiotic Exposure Is Not Associated with Growth in Young Children of Vellore, India. J Pediatr. 2015 Sep 11; 167:1096-102. PMID: 26372535.
  • Francis MR, Nagarajan G, Sarkar R, Mohan VR, Kang G, Balraj V. Perception of drinking water safety and factors influencing acceptance and sustainability of a water quality intervention in rural southern India. BMC Public Health. 2015 Jul 30; 15:731. PMID: 26223687.
  • Collinet-Adler S, Babji S, Francis M, Kattula D, Premkumar PS, Sarkar R, Mohan VR, Ward H, Kang G, Balraj V, Naumova EN. Environmental Factors Associated with High Fly Densities and Diarrhea in Vellore, India. Appl Environ Microbiol. 2015 Sep 1;81(17):6053-8. PMID: 26116684.
  • Rogawski ET, Westreich DJ, Becker-Dreps S, Adair LS, Sandler RS, Sarkar R, Kattula D, Ward HD, Meshnick SR, Kang G. Antibiotic treatment of diarrhoea is associated with decreased time to the next diarrhoea episode among young children in Vellore, India. Int J Epidemiol. 2015 Jun;44(3):978-87. PMID: 25929259.
  • Rogawski ET, Westreich D, Becker-Dreps S, Adair LS, Sandler RS, Sarkar R, Kattula D, Ward HD, Meshnick SR, Kang G. The effect of early life antibiotic exposures on diarrheal rates among young children in Vellore, India. Pediatr Infect Dis J. 2015 Jun;34(6):583-8. PMID: 25742244.
  • Kattula D, Francis MR, Kulinkina A, Sarkar R, Mohan VR, Babji S, Ward HD, Kang G, Balraj V, Naumova EN. Environmental predictors of diarrhoeal infection for rural and urban communities in south India in children and adults. Epidemiol Infect. 2015 Oct;143(14):3036-47. PMID: 25690841.
  • Mohan VR, Sarkar R, Abraham VJ, Balraj V, Naumova EN. Differential patterns, trends and hotspots of road traffic injuries on different road networks in Vellore district, southern India. Trop Med Int Health. 2015 Mar; 20(3):293-303. PMID: 25425088.

2014

  • Sarkar R, Kattula D, Francis MR, Ajjampur SS, Prabakaran AD, Jayavelu N, Muliyil J, Balraj V, Naumova EN, Ward HD, Kang G. Risk factors for cryptosporidiosis among children in a semi urban slum in southern India: a nested case-control study. Am J Trop Med Hyg. 2014 Dec 3;91(6):1128-37. PMID: 25331810.
  • Jennifer MS, Kattula D, Sowmyanarayanan TV, Sarkar R, Kang G. Health utilization for childhood gastroenteritis in southern India. Indian J Pediatr. 2014 Nov;81(11):1240-1. PMID: 24557605.
  • Kompithra RZ, Paul A, Manoharan D, Babji S, Sarkar R, Mathew LG, Kang G. Immunogenicity of a three dose and five dose oral human rotavirus vaccine (RIX4414) schedule in south Indian infants. Vaccine. 2014 Aug 11;32 Suppl 1:A129-33. PMID: 25091666.
  • John J, Sarkar R, Muliyil J, Bhandari N, Bhan MK, Kang G. Rotavirus gastroenteritis in India, 2011-2013: revised estimates of disease burden and potential impact of vaccines. Vaccine. 2014 Aug 11;32 Suppl 1:A5-9. PMID: 25091681.
  • Sarkar R, Tate JE, Ajjampur SS, Kattula D, John J, Ward HD, Kang G. Burden of diarrhea, hospitalization and mortality due to cryptosporidial infections in Indian children. PLoS Negl Trop Dis. 2014 Jul 24;8(7):e3042. PMID: 25058664.
  • Kattula D, Sarkar R, Sivarathinaswamy P, Velusamy V, Venugopal S, Naumova EN, Muliyil J, Ward H, Kang G. The first 1000 days of life: prenatal and postnatal risk factors for morbidity and growth in a birth cohort in southern India. BMJ Open. 2014 Jul 23;4(7):e005404. PMID: 25056979.
  • Sindhu KN, Sowmyanarayanan TV, Paul A, Babji S, Ajjampur SS, Priyadarshini S, Sarkar R, Balasubramanian KA, Wanke CA, Ward HD, Kang G. Immune response and intestinal permeability in children with acute gastroenteritis treated with Lactobacillus rhamnosus GG: a randomized, double-blind, placebo-controlled trial. Clin Infect Dis. 2014 Apr;58(8):1107-15. PMID: 24501384.
  • Kattula D, Sarkar R, Rao Ajjampur SS, Minz S, Levecke B, Muliyil J, Kang G. Prevalence & risk factors for soil transmitted helminth infection among school children in south India. Indian J Med Res. 2014 Jan;139(1):76-82. PMID: 24604041.

2013

  • Kaliappan SP, George S, Francis MR, Kattula D, Sarkar R, Minz S, Mohan VR, George K, Roy S, Ajjampur SS, Muliyil J, Kang G. Prevalence and clustering of soil-transmitted helminth infections in a tribal area in southern India. Trop Med Int Health. 2013 Nov 15 [Epub ahead of print]. doi: 10.1111/tmi.12205. PMID:24237860.
  • Menon VK, Sarkar R, Moses PD, Agarwal I, Simon A, Kang G. Norovirusgenogroup II gastroenteritis in hospitalized children in South India. Am J Trop Med Hyg.  2013 Nov;89(5):1019-22. PMID:24062476.
  • Sarkar R, Kang G, Naumova EN. Rotavirus seasonality and age effects in a birth cohort study of southern India. PLoS One. 2013 Aug 16;8(8):e71616. PMID:23977089.
  • Mukhopadhya I, Sarkar R, Menon VK, Babji S, Paul A, Rajendran P, Sowmyanarayanan TV, Moses PD, Iturriza-Gomara M, Gray JJ, Kang G. Rotavirus shedding in symptomatic and asymptomatic children using reverse transcription-quantitative PCR. J Med Virol. 2013 Sep;85(9):1661-8. PMID:23775335.
  • Sarkar R, Ajjampur SS, Prabakaran AD, Geetha JC, Sowmyanarayanan TV, Kane A, Duara J, Muliyil J, Balraj V, Naumova EN, Ward H, Kang G. Cryptosporidiosis among children in an endemic semiurban community in southern India: does a protected drinking water source decrease infection? Clin Infect Dis. 2013 Aug;57(3):398-406. PMID:23709650.
  • Menon VK, George S, Aladin F, Nawaz S, Sarkar R, Lopman B, Gray JJ, Gomara MI, Kang G.  Comparison of Age-Stratified Seroprevalence of Antibodies against Norovirus GII in India and the United Kingdom. PLoS One. 2013;8(2):e56239. PMID:23437102.
  • Sarkar R, Sivarathinaswamy P, Thangaraj B, Sindhu KN, Ajjampur SS, Muliyil J, Balraj V, Naumova EN, Ward H, Kang G. Burden of childhood diseases and malnutrition in a semi-urban slum in southern India. BMC Public Health. 2013 Jan 30;13:87. PMID:23360429.
  • Francis MR, Roy S, Sarkar R, Balraj V, Kang G. Evaluation of a commercially available polyvinylidene fluoride membrane filtration system for water decontamination. Indian J Med Microbiol. 2013 Jan-Mar;31(1):97-8. PMID:23508447.

  • 2012

  • Desai NT, Sarkar R, Kang G. Cryptosporidiosis: An under-recognized public health problem. Trop Parasitol. 2012 Jul;2(2):91-8. PMID:23767015.
  • Sowmyanarayanan TV, Patel T, Sarkar R, Broor S, Chitambar SD, Krishnan T, Arora R, Kang G. Direct costs of hospitalization for rotavirus gastroenteritis in different health facilities in India. Indian J Med Res. 2012 Jul;136(1):68-73. PMID:22885266.
  • Lopman B, Pitzer VE, Sarkar R, Gladstone B, Patel M, Gambhir M, Atchison C, Grenfell BT, Edmunds J, Kang G, Parashar UD. Understanding reduced rotavirus vaccine efficacy in low socio-economic settings. PLoS One. 2012;7(8):e41720. PMID:22879893.
  • Jagai J, Sarkar R, Castronovo D, Kattula D, McEntree J, Ward HD, Kang G, Naumova EN. Seasonality of rotavirus in South Asia: A meta-analysis approach assessing associations with temperature, precipitation, and vegetation index. PLoS One. 2012;7(5):e38168. PMID:22693594.
  • Sowmyanarayanan TV, Ramani S, Sarkar R, Arumugam R, Warier JP, Moses PD, Simon A, Agarwal I, Bose A, Arora R, Kang G. Severity of rotavirus gastroenteritis in Indian children requiring hospitalization. Vaccine. 2012 Apr 27;30Suppl 1:A167-72. PubMed PMID:22520127.
  • Sarkar R, Ajjampur SSR, Muliyil J, Ward H, Naumova, Kang G. Serum IgG responses and seroconversion patterns to Cryptosporidium gp15 among children in a birth cohort in south India: the effects of maternal and acquired immunity. Clin Vaccine Immunol. 2012 Jun;19(6):849-54. PMID:22518011.
  • Sarkar R, Ajjampur SR, Ward HD, Kang G, Naumova EN. Analysis of human immune responses in quasi-experimental settings: tutorial in biostatistics. BMC Med Res Methodol. 2012 Jan 3;12(1):1.PMID:22214542.

  • 2011

  • Gladstone BP, Ramani S, Mukhopadhya I, Muliyil J, Sarkar R, Rehman AM, Jaffar S, Gomara MI, Gray JJ, Brown DW, Desselberger U, Crawford SE, John J, Babji S, Estes MK, Kang G. Protective effect of natural rotavirus infection in an Indian birth cohort. N Engl J Med. 2011 Jul 28;365(4):337-46. PMID:21793745.
  • AjjampurSSR, KoshyB, VenkataramaniM, Sarkar R, JosephAA, JacobKS, WardH, KangG. Effect of cryptosporidial and giardialdiarrhea on social maturity, intelligence and physical growth in children in a semi urban slum in south India. Ann Trop Pediatr2011;31(3):205-12. PMID:21781414.
  • Ajjampur SS, Sarkar R, Allison G, Banda K, Kane A, Muliyil J, Naumova E, Ward H, Kang G. Serum IgG response to Cryptosporidiumimmunodominant antigen gp15 and polymorphic antigen gp40 in children with cryptosporidiosis in South India. Clin Vaccine Immunol. 2011 Apr;18(4):633-9. PMID:21288997.

  • 2010

  • Ajjampur SSR, Sarkar R, Sankaran P, Kannan A, Menon VK, Muliyil J, Ward H, Kang G. Symptomatic and asymptomatic Cryptosporidium infections in children in a semi-urban slum community in south India. Am J Trop Med &Hyg. 2010 Nov;83(5):1110-5. PMID:21036847.
  • Singh AS, Sarkar R, Kang G, Bose A. Locally made ready-to-use therapeutic food for treatment of malnutrition: A randomized controlled trial. Indian Paediatr. 2010 Aug;47(8):679-86. PMID:20972285.
  • Vivek R, Nihal L, Illiyaraja J, Reddy P, Sarkar R, Eapen CE, Kang G. Investigation of an epidemic of Hepatitis E in Nellore in south India. Trop Med Int Health. 2010 Nov;15(11):1333-9. PMID:20955497.
  • RajendranP, AjjampurSSR, ChidambaramD, ChandraboseG, ThangarajB, Sarkar R, SamuelP, RajanDP, Kang G. Pathotypes of diarrheagenic Escherichia coli in children attending a tertiary care hospital in South India. DiagMicrobiol Infect Dis. 2010 Oct;68(2):117-22. PMID:20846583.
  • Ramani S, Sankaran P, Arumugam R, Sarkar R, Banerjee I, Mohanty I, Jana AK, Kuruvilla KA, Kang G. Comparison of viral load and duration of virus shedding in symptomatic and asymptomatic neonatal rotavirus infections. J Med Virol.2010 Oct;82: 1803-7.  PMID:20827780.
  • Menon V, George S, Ramani S, Sarkar R, Jana AK, Kuruvilla KA, Kang G. GenogroupIIbnorovirus infections and association with enteric symptoms in a neonatal nursery in southern India. J ClinMicrobiol. 2010 Sep;48(9):3212-5. PMID: 20631107.
  • Sarkar R, Sowmyanarayanan TV, Samuel P, Singh AS, Muliyil J, Kang G. Comparison of group counseling with individual counseling in the comprehension of informed consent: a randomized controlled trial. BMC Med Ethics. 2010 May 14;11:8. PMID:20470423.
  • Ajjampur SSR, Liakath F, Kannan A, Rajendran P, Sarkar R, Moses P, Simon A, Agarwal I, Mathew A, O’Connor R, Ward H, Kang G. Multi-site study of cryptosporidiosis in Indian children with diarrhea. J ClinMicrobiol. 2010 Jun;48(6):2075-81. PMID:20392919.

  • 2009

  • Tate JE, Esposito DH, Sarkar R, Gladstone B, Ramani S, Raghava MV, Sowmyanarayanan TV, Gandhe S, Chitambar SD, Arora R, Parashar UD, Kang G. Disease and economic burden of rotavirus diarrhoea in India. Vaccine 2009 Nov 20;27Suppl 5:F18-24. PMID:19931713.
  • Sowmyanarayanan TV, Natarajan SK, Ramachandran A, Sarkar R, Moses PD, Simon A, Agarwal I, ChristopherS, Kang G. Nitric oxide production in children with acute gastroenteritis. Trans Royal Soc Trop Med Hyg. 2009 Aug;103(8):849-51. PMID:19552932.
  • Sarkar R, Grandin EW, Gladstone BP, Muliyil J, Kang G. Comprehension and recall of informed consent among participating families in a birth cohort study on diarrhoeal disease. Public Health Ethics.2009; 2: 37-44.
  • Gopal S, Sarkar R, Banda K, Govindarajan J, Harijan BB, Jeyakumar MB, Mitta P, Sadanala E, Selwyn T, Suresh CR, Thomas VA, Devadason P, Kumar R, Selvapandian D, Kang G, Balraj V. Poor design, planning and practices contribute towards contamination of water: direct observations from a village in southern India using geographic information systems. Ind J Med Res. 2009 Mar;129(3):233-41.PMID:19491414.
  • Ajjampur SS, Sankaran P, Sathyakumar K, Sarkar R, Gladstone B, Kang G. Giardia duodenalis assemblages associated with diarrhea in children in South India identified by PCR-RFLP. Am J Trop Med Hyg.2009 Jan;80(1):16-9. PMID:19141832.

  • 2008

  • Ajjampur SSR, Rajendran P, Ramani S, Banerjee I, Monica B, Sankaran, Rosario V, Arumugam R, Sarkar R, Ward H, Kang G (2008). Closing the diarrhoea diagnostic gap in Indian children by the application of molecular techniques. J Med Microbiol. 2008 Nov;57(Pt 11):1364-8. PMID:18927413. 
  • Sowmyanarayanan TV, Mukhopadhya A, Gladstone BP, Sarkar R, Kang G. Investigation of a hepatitis Investigation of a hepatitis A outbreak in children in an urban slum in Vellore, Tamil Nadu, using geographic information systems. Ind J Med Res. 2008 Jul;128(1):32-7. PMID:18820356.

  • 2007

  • Banda K, Sarkar R, Gopal S, Govindarajan J, Harijan BB, Jeyakumar MJ, Mitta P, Sadanala ME, Selwyn T, Suresh CR, Thomas VA,  Devadason P, Kumar R, SelvapandianD, Kang G, Balraj V. Water handling, sanitation and defecation practices in rural southern India: a knowledge, attitude and practices study. Trans R Soc Trop Med Hyg. 2007 Nov;101(11):1124-30. PMID:17765275.
  • Sarkar R, Thirumal PA, Manickam S, Selvapandian D, Raghava MV, Kang G, Balraj V. Epidemiological investigation of an outbreak of acute diarrhoeal disease using geographic information systems. Trans Roy Soc Trop Med Hyg. 2007 Jun;101(6):587-93. PMID:17267000.
  • Ramani S, Banerjee I, Gladstone B, Sarkar R, Selvapandian D, LeFevre A, Jaffar S, IturrizaGomara M, Gray JJ, Estes, MK, Brown DW, Kang G. Geographic information systems and genotyping in the identification of rotavirus G12 infections in an urban slum with subsequent detection in hospitalized children: Emergence of G12 genotype in South India. J ClinMicrobiol. 2007 Feb;45(2):432-7. PMID:17135437.
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