Kannangai R, Ramalingam S, Jesudason MV, Vijayakumar TS, Abraham OC, Zachariah A, Sridharan G. Correlation of CD4(+) T-Cell counts estimated by an immunocapture technique (Capcellia) with viral loads in human immunodeficiency virus-seropositive individuals. Clin Diagn Lab Immunol. 2001 Nov;8(6):1286-8. doi: 10.1128/CDLI.8.6.1286-1288.2001. PMID: 11687479; PMCID: PMC96265.

Kannangai R, Ramalingam S, Prakash KJ, Abraham OC, George R, Castillo RC, Schwartz DH, Jesudason MV, Sridharan G. Molecular confirmation of human immunodeficiency virus (HIV) type 2 in HIV-seropositive subjects in south India. Clin Diagn Lab Immunol. 2000 Nov;7(6):987-9. doi: 10.1128/cdli.7.6.987-989.2000. PMID: 11063512; PMCID: PMC95999.

Kannangai R, Ramalingam S, Prakash KJ, Abraham OC, George R, Castillo RC, Schwartz DH, Jesudason MV, Sridharan G. A peptide enzyme linked immunosorbent assay (ELISA) for the detection of human immunodeficiency virus type-2 (HIV-2) antibodies: an evaluation on polymerase chain reaction (PCR) confirmed samples. J Clin Virol. 2001 Aug;22(1):41-6. doi: 10.1016/s1386-6532(01)00170-6. PMID: 11418351.

Manesh A, Barnabas R, Mani S, Karthik R, Abraham OC, Chacko G, Kannangai R, Varghese GM. Symptomatic HIV CNS viral escape among patients on effective cART. Int J Infect Dis. 2019 Jul;84:39-43. doi: 10.1016/j.ijid.2019.03.033. Epub 2019 Apr 2. PMID: 30951880.

Kasirajan A, Mammen S, Kannangai R, Abraham AM. Phylogenetic analysis of partial pre-membrane and envelope sequences of dengue viruses circulating in India. Int J Infect Dis. 2019 Jul;84S:S44-S56. doi: 10.1016/j.ijid.2019.04.010. Epub 2019 Apr 17. PMID: 31002930.

Ramalingam VV, Demosthenes JP, Ghale BC, Rupali P, Varghese GM, Abraham OC, Kannangai R. Frequency of cross-resistance to rilpivirine and etravirine among HIV-1 subtype C infected individuals failing nevirapine/efavirenz based ART regimen. Infect Dis (Lond). 2019 Jan;51(1):71-74. doi: 10.1080/23744235.2018.1510182. Epub 2018 Oct 29. PMID: 30371136.

Kannangai R, Ramalingam S, Jesudason MV, Vijayakumar TS, Abraham OC, Zachariah A, Sridharan G. Correlation of CD4(+) T-Cell counts estimated by an immunocapture technique (Capcellia) with viral loads in human immunodeficiency virus-seropositive individuals. Clin Diagn Lab Immunol. 2001 Nov;8(6):1286-8. doi: 10.1128/CDLI.8.6.1286-1288.2001. PMID: 11687479; PMCID: PMC96265.

Kannangai R, Ramalingam S, Prakash KJ, Abraham OC, George R, Castillo RC, Schwartz DH, Jesudason MV, Sridharan G. Molecular confirmation of human immunodeficiency virus (HIV) type 2 in HIV-seropositive subjects in south India. Clin Diagn Lab Immunol. 2000 Nov;7(6):987-9. doi: 10.1128/cdli.7.6.987-989.2000. PMID: 11063512; PMCID: PMC95999.

Kannangai R, Ramalingam S, Prakash KJ, Abraham OC, George R, Castillo RC, Schwartz DH, Jesudason MV, Sridharan G. A peptide enzyme linked immunosorbent assay (ELISA) for the detection of human immunodeficiency virus type-2 (HIV-2) antibodies: an evaluation on polymerase chain reaction (PCR) confirmed samples. J Clin Virol. 2001 Aug;22(1):41-6. doi: 10.1016/s1386-6532(01)00170-6. PMID: 11418351.

Manesh A, Barnabas R, Mani S, Karthik R, Abraham OC, Chacko G, Kannangai R, Varghese GM. Symptomatic HIV CNS viral escape among patients on effective cART. Int J Infect Dis. 2019 Jul;84:39-43. doi: 10.1016/j.ijid.2019.03.033. Epub 2019 Apr 2. PMID: 30951880.

Kasirajan A, Mammen S, Kannangai R, Abraham AM. Phylogenetic analysis of partial pre-membrane and envelope sequences of dengue viruses circulating in India. Int J Infect Dis. 2019 Jul;84S:S44-S56. doi: 10.1016/j.ijid.2019.04.010. Epub 2019 Apr 17. PMID: 31002930.

Ramalingam VV, Demosthenes JP, Ghale BC, Rupali P, Varghese GM, Abraham OC, Kannangai R. Frequency of cross-resistance to rilpivirine and etravirine among HIV-1 subtype C infected individuals failing nevirapine/efavirenz based ART regimen. Infect Dis (Lond). 2019 Jan;51(1):71-74. doi: 10.1080/23744235.2018.1510182. Epub 2018 Oct 29. PMID: 30371136.

Paul H, Peter D, Pulimood SA, Abraham OC, Mathai E, Prasad JH, Kannangai R. Role of polymerase chain reaction in the diagnosis of Trichomonas vaginalis infection in human immunodeficiency virus-infected individuals from India (South). Indian J Dermatol Venereol Leprol. 2012 May-Jun;78(3):323-7. doi: 10.4103/0378-6323.95448. PMID: 22565432.

Ramalingam S, Kannangai R, Abraham OC, Subramanian S, Rupali P, Pulimood SA, Jesudason MV, Sridharan G. Chemokine profile among human immunodeficiency virus-1 (HIV-1) infected individuals from southern India. Indian J Med Res. 2008 Feb;127(2):133-9. PMID: 18403790.

Ramalingam S, Kannangai R, Vijayakumar TS, Mathai D, Abraham OC, Subramanian S, Rupali P, Jesudason MV, Sridharan G. Subtype & cytokine profiles of HIV infected individuals from south India. Indian J Med Res. 2005 Apr;121(4):226-34. PMID: 15817940.

Ramalingam S, Kannangai R, Vijayakumar TS, Subramanian S, Abraham OC, Rupali P, Jesudason MV, Sridharan G. Increased number of CCR5+ CD4 T cells among south Indian adults probably associated with the low frequency of X4 phenotype of HIV-1 in India. Indian J Med Res. 2002 Sep;116:90-5. PMID: 12619446.

Sachithanandham J, Ramalingam VV, Raja J, Abraham OC, Pulimood SA, Kannangai R. Expression of cytokine-mRNA in peripheral blood mononuclear cell of human immunodeficiency virus-1 subtype C infected individuals with opportunistic viral infections from India (South). Indian J Med Microbiol. 2016 Jan-Mar;34(1):76-81. doi: 10.4103/0255-0857.174118. PMID: 26776123.

Sachithanandham J, Ramamurthy M, Kannangai R, Daniel HD, Abraham OC, Rupali P, Pulimood SA, Abraham AM, Sridharan G. Detection of opportunistic DNA viral infections by multiplex PCR among HIV infected individuals receiving care at a tertiary care hospital in South India. Indian J Med Microbiol. 2009 Jul-Sep;27(3):210-6. doi: 10.4103/0255-0857.53202. PMID: 19584500.

Sadashiv MS, Rupali P, Manesh A, Kannangai R, Abraham OC, Pulimood SA, Karthik R, Rajkumar S, Thomas K. Risk Factors of Clinical and Immunological Failure in South Indian Cohort on Generic Antiretroviral Therapy. J Assoc Physicians India. 2017 Dec;65(12):34-39. PMID: 29327520.

Sivadasan A, Abraham OC, Rupali P, Pulimood SA, Rajan J, Rajkumar S, Zachariah A, Kannangai R, Kandathil AJ, Sridharan G, Mathai D. High rates of regimen change due to drug toxicity among a cohort of South Indian adults with HIV infection initiated on generic, first-line antiretroviral treatment. J Assoc Physicians India. 2009 May;57:384-8. PMID: 19634284.

Ramalingam S, Kannangai R, Zachariah A, Mathai D, Abraham C. CD4 counts of normal and HIV-infected south Indian adults: do we need a new staging system? Natl Med J India. 2001 Nov-Dec;14(6):335-9. PMID: 11804363.

Kandathil AJ, Joseph AP, Kannangai R, Srinivasan N, Abraham OC, Pulimood SA, Sridharan G. HIV reverse transcriptase: structural interpretation of drug resistant genetic variants from India. Bioinformation. 2009 Aug 20;4(1):36-45. doi: 10.6026/97320630004036. PMID: 20011151; PMCID: PMC2770369.

Kandathil AJ, Joseph AP, Kannangai R, Srinivasan N, Abraham OC, Pulimood SA, Sridharan G. Structural basis of drug resistance by genetic variants of HIV type 1 clade c protease from India. AIDS Res Hum Retroviruses. 2009 May;25(5):511-9. doi: 10.1089/aid.2008.0102. PMID: 19400736.

Kandathil AJ, Kannangai R, Abraham OC, Pulimood SA, Jensen MA, Sridharan G. HIV-1 with predicted CXCR4 genotype identified in clade C from India. Mol Diagn Ther. 2009;13(1):19-24. doi: 10.1007/BF03256311. PMID: 19351212.

Kandathil AJ, Kannangai R, Abraham OC, Pulimood SA, Jensen MA, Sridharan G. A comparison of interpretation by three different HIV type 1 genotypic drug resistance algorithms using sequences from non-clade B HIV type 1 strains. AIDS Res Hum Retroviruses. 2009 Mar;25(3):315-8. doi: 10.1089/aid.2008.0177. PMID: 19292596.

Kandathil AJ, Kannangai R, Abraham OC, Pulimood SA, Sridharan G. Amino acid sequence divergence of Tat protein (exon1)of subtype B and C HIV-1 strains: Does it have implications for vaccine development? Bioinformation. 2009 Dec 12;4(6):237-41. doi: 10.6026/97320630004237. PMID: 20975916; PMCID: PMC2951709.

Alex D, Raj Williams TI, Sachithanandham J, Prasannakumar S, Demosthenes JP, Ramalingam VV, Victor PJ, Rupali P, Fletcher GJ, Kannangai R. Performance of a Modified In-House HIV-1 Avidity Assay among a Cohort of Newly Diagnosed HIV-1 Infected Individuals and the Effect of ART on the Maturation of HIV-1 Specific Antibodies. Curr HIV Res. 2019;17(2):134-145. doi: 10.2174/1570162X17666190712125606. PMID: 31309891.

Kannangai R, Kandathil AJ, Ebenezer DL, Mathai E, Prakash AJ, Abraham OC, Sudarsanam TD, Pulimood SA, Selvakumar R, Job V, Sridharan G. Usefulness of alternate prognostic serum and plasma markers for antiretroviral therapy for human immunodeficiency virus type 1 infection. Clin Vaccine Immunol. 2008 Jan;15(1):154-8. doi: 10.1128/CVI.00193-07. Epub 2007 Nov 14. PMID: 18003813; PMCID: PMC2223864.

Kannangai R, Prakash KJ, Ramalingam S, Abraham OC, Mathews KP, Jesudason MV, Sridharan G. Peripheral CD4+/CD8+ T-lymphocyte counts estimated by an immunocapture method in the normal healthy south Indian adults and HIV seropositive individuals. J Clin Virol. 2000 Aug;17(2):101-8. doi: 10.1016/s1386-6532(00)00080-9. PMID: 10942090.

Knnangai, R., Shaji, R. V., Ramalingam, S., Jesudason, M. V., Abraham, O. C., George, R., Shanmugam, A. P., Schwartz, D. H. and Sridharan, G. HIV-2 subtype circulating in India (south) J Acquir Immune Defic Syndr; 2003, 33 (2): 219-22 Link

Paul N, Kannagai R, Robert K, Harikishan B, Rupali P, Abraham OC. A HIPS-mimic. J Intern Med. 2005 Dec;258(6):579-80. doi: 10.1111/j.1365-2796.2005.01574.x. PMID: 16313482.

Peedicayil A, Thiyagarajan K, Gnanamony M, Pulimood SA, Jeyaseelan V, Kannangai R, Lionel J, Abraham OC, Abraham P. Prevalence and risk factors for human papillomavirus and cervical intraepithelial neoplasia among HIV-positive women at a tertiary level hospital in India. J Low Genit Tract Dis. 2009 Jul;13(3):159-64. doi: 10.1097/LGT.0b013e31818fb40d. PMID: 19550213.

Jagannath S, Sachithanandham J, Ramalingam VV, Demosthenes JP, Abraham AM, Zachariah A, Varghese GM, Kannangai R. BK virus characterisation among HIV-1-Infected individuals and its association with immunosuppression. Indian J Med Microbiol. 2018 Apr-Jun;36(2):172-177. doi: 10.4103/ijmm.IJMM_18_54. PMID: 30084406.

Sachithanandham J, Kannangai R, Abraham AM, Fletcher GJ, Abraham OC, Daniel D, Pulimood SA. Human herpes virus-8 infections among subjects with human immunodeficiency virus infection and normal healthy individuals in India. Intervirology. 2013;56(4):253-7. doi: 10.1159/000349890. Epub 2013 Jun 11. PMID: 23774948.

Goyal S, Kannangai R, Abraham AM, Ebenezer DL, Sridharan G. Lack of increased frequency of human immunodeficiency virus infection in individuals with dengue-like illness in South India. Indian J Med Microbiol. 2007 Jul;25(3):300-1. PMID: 17901660.

Vijayakumar TS, David S, Selvaraj K, Viswanathan T, Kannangai R, Sridharan G. Performance of a rapid immunochromatographic screening test for detection of antibodies to human immunodeficiency virus type 1 (HIV-1) and HIV-2: experience at a tertiary care hospital in South India. J Clin Microbiol. 2005 Aug;43(8):4194-6. doi: 10.1128/JCM.43.8.4194-4196.2005. PMID: 16081975; PMCID: PMC1233946.

Kandathil AJ, Kannangai R, David S, Selvakumar R, Job V, Abraham OC, Sridharan G. Human immunodeficiency virus infection and levels of Dehydroepiandrosterone sulfate in plasma among Indians. Clin Diagn Lab Immunol. 2005 Sep;12(9):1117-8. doi: 10.1128/CDLI.12.9.1117-1118.2005. PMID: 16148181; PMCID: PMC1235806.

Rymbai ML, Ramalingam VV, Samarasan I, Chandran BS, Mathew G, Jerobin J, Abraham AM, Sachithanandham J, Kannangai R. Frequency of Epstein--Barr virus infection as detected by messenger RNA for EBNA 1 in histologically proven gastric adenocarcinoma in patients presenting to a tertiary care center in South India. Indian J Med Microbiol. 2015 Jul-Sep;33(3):369-73. doi: 10.4103/0255-0857.158556. PMID: 26068337.

Kannangai R, Abraham AM, Sankar S, Sridharan G. Nanotechnology tools for single-virus particle detection. Indian J Med Microbiol. 2010 Apr-Jun;28(2):95-9. doi: 10.4103/0255-0857.62482. PMID: 20404451.

Abraham M, Rudraraju R, Kannangai R, George K, Cherian T, Daniel D, Ramalingam S, Sridharan G. A pilot study on the seroprevalence of parvovirus B19 infection. Indian J Med Res. 2002 Apr;115:139-43. PMID: 12239835.

Shoby CT, Soloman R, Kuruvilla KA, Jana AK, Abraham M, Finny GJ, Kuppachi SC, Kannangai R, Sridharan G. Human cytomegalovirus perinatal infections in a tertiary care setting. Indian Pediatr. 2002 Jun;39(6):561-4. PMID: 12084950.

Kandathil AJ, Ramalingam S, Kannangai R, David S, Sridharan G. Molecular epidemiology of HIV. Indian J Med Res. 2005 Apr;121(4):333-44. PMID: 15817947.

David S, Sachithanandham J, Jerobin J, Parasuram S, Kannangai R. Comparison of HIV-1 RNA level estimated with plasma and DBS samples: a pilot study from India (South). Indian J Med Microbiol. 2012 Oct-Dec;30(4):403-6. doi: 10.4103/0255-0857.103759. PMID: 23183463.

Kannangai R, Ramalingam S, Vijayakumar TS, David S, Sridharan G. Is the human immunodeficiency virus (HIV) epidemic slowing down in India? Natl Med J India. 2006 Jan-Feb;19(1):38-9. PMID: 16570686.

Abraham AM, Kannangai R, Sridharan G. Nanotechnology: a new frontier in virus detection in clinical practice. Indian J Med Microbiol. 2008 Oct-Dec;26(4):297-301. PMID: 18974480.

Kandathil AJ, Kannangai R, Abraham OC, Sudarsanam TD, Pulimood SA, Sridharan G. Genotypic resistance profile of HIV-1 protease gene: a preliminary report from Vellore, south India. Indian J Med Microbiol. 2008 Apr-Jun;26(2):151-4. doi: 10.4103/0255-0857.40530. PMID: 18445952.

Kannangai R, Kandathil AJ, Ebenezer DL, Nithyanandam G, Samuel P, Abraham OC, Sudarsanam TD, Pulimood SA, Sridharan G. Evidence for lower CD4+ T cell and higher viral load in asymptomatic HIV-1 infected individuals of India: implications for therapy initiation. Indian J Med Microbiol. 2008 Jul-Sep;26(3):217-21. doi: 10.4103/0255-0857.42031. PMID: 18695317.

Kannangai R, Ramalingam S, Vijayakumar TS, Vincent AA, Abraham OC, Subramanian S, Rupali P, Mathai D, Jesudason MV, Sridharan G. The immunological and virological response in human immunodeficiency virus type-1 (HIV-1) infected Indian individuals on HAART therapy: a one-year follow up study. Indian J Med Microbiol. 2003 Oct-Dec;21(4):274-6. PMID: 17643043.

Paul H, Peter D, Pulimood SA, Abraham OC, Mathai E, Prasad JH, Kannangai R. Role of polymerase chain reaction in the diagnosis of Trichomonas vaginalis infection in human immunodeficiency virus-infected individuals from India (South). Indian J Dermatol Venereol Leprol. 2012 May-Jun;78(3):323-7. doi: 10.4103/0378-6323.95448. PMID: 22565432.

Pant Pai N, Daher J, Prashanth HR, Shetty A, Sahni RD, Kannangai R, Abraham P, Isaac R. Will an innovative connected AideSmart! app-based multiplex, point-of-care screening strategy for HIV and related coinfections affect timely quality antenatal screening of rural Indian women? Results from a cross-sectional study in India. Sex Transm Infect. 2019 Mar;95(2):133-139. doi: 10.1136/sextrans-2017-053491. Epub 2018 Oct 15. PMID: 30322858; PMCID: PMC6580765.

Pant Pai, N., Daher, J., Prashanth, H. R., Shetty, A., Sahni, R. D., Kannangai, R., Abraham, P. and Isaac, R. Will an innovative connected AideSmart! app-based multiplex, point-of-care screening strategy for HIV and related coinfections affect timely quality antenatal screening of rural Indian women? Results from a cross-sectional study in India Sex Transm Infect; 2018, Link

Vijay Prakash Turaka, Roshini G Nair, Tunny Sebastian, Rajesh Kannangai, Joy Sarojini Michael, George M Varghese Risk factors for active tuberculosis in human immunodeficiency virus-infected individuals CHRISMED J Health Res 6(3) : 167-171 Link

Kannangai R, Sachithanandham J, Mahadevan A, Abraham AM, Sridharan G, Desai A, Ravi V, Shankar SK. Association of neurotropic viruses in HIV-infected individuals who died of secondary complications of tuberculosis, cryptococcosis, or toxoplasmosis in South India. J Clin Microbiol. 2013 Mar;51(3):1022-5. doi: 10.1128/JCM.03321-12. Epub 2013 Jan 2. PMID: 23284020; PMCID: PMC3592081.

Ramamurthy M, Alexander M, Aaron S, Kannangai R, Ravi V, Sridharan G, Abraham AM. Comparison of a conventional polymerase chain reaction with real-time polymerase chain reaction for the detection of neurotropic viruses in cerebrospinal fluid samples. Indian J Med Microbiol. 2011 Apr-Jun;29(2):102-9. doi: 10.4103/0255-0857.81777. PMID: 21654102.

Demosthenes JP, Fletcher GJ, Zachariah UG, Varghese GM, Pulimood SA, Abraham P, Kannangai R. Chronic Immune Activation Among Treatment Naïve HIV/ HBV Coinfected Individuals From Southern India. Curr HIV Res. 2021;19(4):332-341. doi: 10.2174/1570162X19666210506160642. PMID: 33970847.

Ismail AM, Sharma OP, Kumar MS, Eapen CE, Kannangai R, Abraham P. Virological response and antiviral resistance mutations in chronic hepatitis B subjects experiencing entecavir therapy: an Indian subcontinent perspective. Antiviral Res. 2013 May;98(2):209-16. doi: 10.1016/j.antiviral.2013.02.012. Epub 2013 Feb 26. PMID: 23485939.

Hernandez AL, Karthik R, Sivasubramanian M, Raghavendran A, Gnanamony M, Lensing S, Lee JY, Kannangai R, Abraham P, Mathai D, Palefsky JM. Prevalence of Anal HPV Infection Among HIV-Positive Men Who Have Sex With Men in India. J Acquir Immune Defic Syndr. 2016 Apr 1;71(4):437-43. doi: 10.1097/QAI.0000000000000855. PMID: 26379067; PMCID: PMC4939069.

Ismail AM, Sharma OP, Kumar MS, Kannangai R, Abraham P. Impact of rtI233V mutation in hepatitis B virus polymerase protein and adefovir efficacy: Homology modeling and molecular docking studies. Bioinformation. 2013;9(3):121-5. doi: 10.6026/97320630009121. Epub 2013 Feb 6. PMID: 23423477; PMCID: PMC3569598.

Padaki PA, Sachithanandham J, Isaac R, Ramalingam VV, Abraham OC, Pulimood SA, Kannangai R. The performance of reverse transcriptase assay for the estimation of the plasma viral load in HIV-1 and HIV-2 infections. Infect Dis (Lond). 2016;48(6):467-71. doi: 10.3109/23744235.2015.1122832. Epub 2015 Dec 11. PMID: 26654354.

Ismail AM, Goel A, Kannangai R, Abraham P. Further evidence of hepatitis B virus genotype I circulation in Northeast India. Infect Genet Evol. 2013 Aug;18:60-5. doi: 10.1016/j.meegid.2013.04.033. Epub 2013 May 9. PMID: 23665463.

Raghavendran A, Hernandez AL, Lensing S, Gnanamony M, Karthik R, Sivasubramanian M, Kannangai R, Abraham P, Mathai D, Palefsky JM. Genital Human Papillomavirus Infection in Indian HIV-Seropositive Men Who Have Sex With Men. Sex Transm Dis. 2017 Mar;44(3):173-180. doi: 10.1097/OLQ.0000000000000564. PMID: 28178116; PMCID: PMC5302848.

Ramamurthy M, Sankar S, Kannangai R, Nandagopal B, Sridharan G. Application of viromics: a new approach to the understanding of viral infections in humans. Virusdisease. 2017 Dec;28(4):349-359. doi: 10.1007/s13337-017-0415-3. Epub 2017 Dec 5. PMID: 29291225; PMCID: PMC5747850.

Mani M, Ramalingam VV, Lionel J, Christina SA, Sachithanandham J, Peedicayil A, Kannangai R. Emergence of HIV-1 drug-resistant variants in women following antiretroviral prophylaxis for the prevention of mother to child transmission. Indian J Med Microbiol. 2015 Apr-Jun;33(2):225-30. doi: 10.4103/0255-0857.154860. PMID: 25865972.

Murugesan M, Raveendran R, Kannangai R, Ramasamy J, Ray P, Gope M, Natarajan V, Walia K, Wattal C, Veeraraghavan B. Indian microbiology EQAS registered laboratory's capacity building and infection control practices during the COVID-19 pandemic in India: Lessons learnt and gaps identified. Indian J Med Microbiol. 2023 May-Jun;43:51-57. doi: 10.1016/j.ijmmb.2022.09.009. Epub 2022 Oct 17. PMID: 36266150 PMCID: PMC9576257.

Das S, Doss C GP, Fletcher J, Kannangai R, Abraham P, Ramanathan G. The impact of human papilloma virus on human reproductive health and the effect on male infertility: An updated review. J Med Virol. 2023 Apr;95(4):e28697. doi: 10.1002/jmv.28697. PMID: 36951428.

Dhoot A, Mammen JJ, Mathews NS, Kannangai R, Daniel D, Prasannakumar S. Internal quality control for HIV testing of blood donors - Dried tube specimen as a cost-effective alternative. Asian J Transfus Sci. 2022 Jul-Dec;16(2):231-237. doi: 10.4103/ajts.ajts_75_21. Epub 2022 May 26. PMID: 36687551; PMCID: PMC9855207.

Ponnuvel S, Prakash A, Steve RJ, Doss GP, Goel A, Zachariah UG, Eapen CE, Rebekah G, Kannangai R, Fletcher GJ, Abraham P. Longitudinal assessment of HCV core antigen kinetics to monitor therapeutic response in the age of DAAs. PLoS One. 2023 Feb 17;18(2):e0282013. doi: 10.1371/journal.pone.0282013. PMID: 36800372; PMCID: PMC9937470.

Solaimalai D, Gupta A, George L, Manesh A, Karthik R, Sathishkumar D, Peter CVD, Varghese GM, Pulimood SA, Kannangai R, Prakash JA. Upward trends of syphilis in the non-pregnant adults: A six-year report on clinical and epidemiological profile of syphilis from a tertiary care center, India. Front Public Health. 2022 Jul 26;10:908591. doi: 10.3389/fpubh.2022.908591. PMID: 35958862; PMCID: PMC9359669.

Kandathil AJ, Kannangai R, David S, Nithyanandam G, Solomon S, Balakrishnan P, Abraham OC, Subramanian S, Rupali P, Verghese VP, Pulimood S, Sridharan G. Comparison of Microcapillary Cytometry Technology and Flow Cytometry for CD4+ and CD8+ T-Cell Estimation. Clin Diagn Lab Immunol. 2005 Aug;12(8):1006-9. doi: 10.1128/CDLI.12.8.1006-1009.2005. PMID: 16085920; PMCID: PMC1182191.

Daniel HD, Kumar S, Kannangai R, Lakshmi KM, Agbandje-Mckenna M, Coleman K, Srivastava A, Srivastava A, Abraham AM. Prevalence of Adeno-Associated Virus 3 Capsid Binding and Neutralizing Antibodies in Healthy and Hemophilia B Individuals from India. Hum Gene Ther. 2021 May;32(9-10):451-457. doi: 10.1089/hum.2020.258. Epub 2021 Apr 23. PMID: 33207962.

Steve RJ, Prakash A, Ponnuvel S, Dickson CJ, Nandan K, Singh B, Sam GA, Goel A, Zachariah UG, Eapen CE, Kannangai R, Abraham P, Fletcher GJ. Versatile performance edges of HBsAg Next assay in diagnosis and therapeutic monitoring of HBV infection. J Clin Virol. 2023 Jan 11;160:105378. doi: 10.1016/j.jcv.2023.105378. Epub ahead of print. PMID: 36641983.

Calvin DJD, Steve RJ, Kannangai R, Abraham P, Udhaya Kumar S, Balasundaram A, George Priya Doss C, Thomas V, Thomas A, Danda D, Fletcher JG. HPV and molecular mimicry in systemic lupus erythematosus and an impact of compiling B-cell epitopes and MHC-class II binding profiles with in silico evidence. J Biomol Struct Dyn. 2023 Feb 6:1-9. doi: 10.1080/07391102.2023.2175261. Epub ahead of print. PMID: 36744526.

Baliga PR, Anantharam R, Thomas V, Rupali P, Chopra M, Pulimood S, Lionel J, Peedicayil A, Kannangai R, Gnanamony M, Abraham P. Evaluating the PGMY-centre hospitalier universitaire vaudois assay as a cost-effective tool for human papillomavirus genotyping in HIV-infected women. Indian J Med Microbiol. 2019 Oct-Dec;37(4):542-548. doi: 10.4103/ijmm.IJMM_20_101. PMID: 32436878.

Prakash A, Ponnuvel S, Devadasan JDC, Nithyanandhan K, Baskaran A, Steve RJ, Kalpana T, Singh B, Goel A, Zachariah UG, Eapen CE, Kannangai R, Abraham P, Fletcher GJ. ARCHITECT HBsAg Next assay is positioned better to resolve and refine challenging weak reactive clinical samples. J Clin Virol. 2023 Sep;166:105524. doi: 10.1016/j.jcv.2023.105524. Epub 2023 Jun 26. PMID: 37392725.

Ramesan CK, Calvin JD, Thomas A, Fletcher J, Kannangai R, Abraham P, Peedicayil A. Diagnostic study of human papillomavirus DNA detection in cervical and vaginal samples using the filter paper card. Int J Gynaecol Obstet. 2023 Nov;163(2):660-666. doi: 10.1002/ijgo.14906. Epub 2023 Jun 2. PMID: 37269047.

Kannangai R, Ramalingam S, Castillo RC, Babu PG, John TJ, Sridharan G, Schwartz DH. HIV-2 status in southern India. Trans R Soc Trop Med Hyg. 1999 Jan-Feb;93(1):30-1. doi: 10.1016/s0035-9203(99)90168-2. PMID: 10492784.

Demosthenes JP, Ghale BC, Alex D, Ramalingam VV, Fletcher GJ, Abraham P, Kannangai R. Challenges and Pragmatic Solutions for Assessing the Reliability of HIV-1 Viral Load Monitoring in Resource-Constrained Settings. Intervirology. 2024;67(1):1-5. doi: 10.1159/000535064. Epub 2023 Nov 26. PMID: 38008075; PMCID: PMC10765359.

Thomas S, Duraisamy SK, Ahmed R, Abraham A, Vishwabandhya A, Mathews V, Srivastava A, Samuel P, Kannangai R, Abraham OC, George B, Abraham AM. Early detection, reactivation of cytomegalovirus DNA & immediate early (IE)-mRNA expression in hematopoietic stem cell-transplant patients. Indian J Med Microbiol. 2023 Dec 19;47:100521. doi: 10.1016/j.ijmmb.2023.100521. Epub ahead of print. PMID: 38072066.

Loganathan T, Fletcher J, Abraham P, Kannangai R, Chakraborty C, El Allali A, Alsamman AM, Zayed H, C GPD. Expression analysis and mapping of Viral-Host Protein interactions of Poxviridae suggests a lead candidate molecule targeting Mpox. BMC Infect Dis. 2024 May 10;24(1):483. doi: 10.1186/s12879-024-09332-x. PMID: 38730352; PMCID: PMC11088078.

Panmei K, Biswas D, Mammen S, Kannangai R, Balachandran A, Verghese VP, Jasper A, Abraham AM. First Human Parechovirus CNS infections from India: a report of two cases. Indian J Med Microbiol. 2025 May-Jun;55:100853. doi: 10.1016/j.ijmmb.2025.100853. Epub 2025 Apr 21. PMID: 40268091.

Panmei K, Biswas D, Mammen S, Kannangai R, Balachandran A, Verghese VP, Jasper A, Abraham AM. First Human Parechovirus CNS infections from India: a report of two cases. Indian J Med Microbiol. 2025 May-Jun;55:100853. doi: 10.1016/j.ijmmb.2025.100853. Epub 2025 Apr 21. PMID: 40268091.

Calvin Devadasan JD, Nithyanandhan K, Fletcher GJ, Kannangai R, Abraham P. HPV vaccines - A game changer for preventing HPV-related cancers. Indian J Med Microbiol. 2025 May-Jun;55:100847. doi: 10.1016/j.ijmmb.2025.100847. Epub 2025 Apr 10. PMID: 40221095.

Sabu P, Alex D, Ramalingam VV, Demosthenes JP, Fletcher GJ, Abraham P, Kannangai R. Comparison of Plasma, Dried Blood Spots, and Peripheral Blood Mononuclear Cells as Biosamples for HIV-1 Genotypic Drug Resistance in a Tertiary Care Center. AIDS Res Hum Retroviruses. 2026 Feb;42(2):67-76. doi: 10.1177/08892229251405793. Epub 2025 Dec 29. PMID: 41467909.

Loganathan T, Vasudevan K, Fletcher J, Abraham P, Kannangai R, Doss C GP. Mutational dynamics and phylogenetic insights into monkeypox virus clade I evolution. Comput Biol Chem. 2025 Dec;119:108536. doi: 10.1016/j.compbiolchem.2025.108536. Epub 2025 May 31. PMID: 40505262.

Ponnuvel S, Ali H, Prakash A, John Steve R, Singh B, Cherian AG, Goel A, Zachariah UG, Eapen Eapen C, Buenning C, Daghfal DJ, Kannangai R, Abraham P, John Fletcher G. Superior Performance of Newly Developed Alinity Anti-HCV Next Assay in the Diagnosis of HCV Infection. J Med Virol. 2025 Mar;97(3):e70307. doi: 10.1002/jmv.70307. PMID: 40099813.

Barik G, Fletcher GJ, Alex D, Demosthenes JP, Abraham P, Kannangai R. HIV vaccine - Is there a ray of hope in the rugged journey? Indian J Med Microbiol. 2025 Jul-Aug;56:100885. doi: 10.1016/j.ijmmb.2025.100885. Epub 2025 Jun 3. PMID: 40472898.

Calvin Devadasan JD, Nithyanandhan K, Fletcher GJ, Kannangai R, Abraham P. HPV vaccines - A game changer for preventing HPV-related cancers. Indian J Med Microbiol. 2025 May-Jun;55:100847. doi: 10.1016/j.ijmmb.2025.100847. Epub 2025 Apr 10. PMID: 40221095.

Mathew S, Alex D, Demosthenes JP, Rose W, Chacko A, Kompithra RZ, Ramalingam VV, Prakash JAJ, Mathai J, Fletcher GJ, Abraham P, Verghese VP, Kannangai R. Heterogeneity and Hierarchy of Immune Response to Primary Immunization in HIV-Infected Children on HAART and the Impact of an Additional Dose of Vaccine. Indian J Pediatr. 2025 Feb;92(2):181-184. doi: 10.1007/s12098-024-05148-4. Epub 2024 May 27. PMID: 38801497.

Alex D, Steve RJ, Ramalingam VV, Demosthenes JP, Vijayalakshmi G, Ghale BC, Rupali P, Varghese GM, Daniel D, Rebekah G, Fletcher GJ, Abraham P, Kannangai R. Prevalence and potential impact of human pegivirus-1 on HIV-1 disease progression among Indian PLHIV. J Infect Dev Ctries. 2024 Jul 29;18(7):1108-1117. doi: 10.3855/jidc.19397. PMID: 39078797.

Loganathan T, Fletcher J, Abraham P, Kannangai R, Chakraborty C, El Allali A, Alsamman AM, Zayed H, C GPD. Expression analysis and mapping of Viral-Host Protein interactions of Poxviridae suggests a lead candidate molecule targeting Mpox. BMC Infect Dis. 2024 May 10;24(1):483. doi: 10.1186/s12879-024-09332-x. PMID: 38730352; PMCID: PMC11088078.

Kannangai R, Kandathil AJ, Daniel HD, Prasannakumar S, Lionnel J, Abraham P. An unusual seroconversion profile in a pregnant woman infected with the human immunodeficiency virus-1: need for using later generations HIV screening assays. Indian J Med Microbiol. 2008 Oct-Dec;26(4):390-2. doi: 10.4103/0255-0857.43570. PMID: 18974501.

Fletcher GJ, Gnanamony M, Samuel P, Ismail AM, Kannangai R, Daniel D, Eapen CE, Abraham P. Association of mannose-binding lectin polymorphisms and HBV outcome in a South Indian population. Int J Immunogenet. 2010 Jun;37(3):177-84. doi: 10.1111/j.1744-313X.2010.00908.x. Epub 2010 Feb 24. PMID: 20193030.

Fletcher GJ, Samuel P, Christdas J, Gnanamony M, Ismail AM, Anantharam R, Eapen CE, Chacko MP, Daniel D, Kannangai R, Abraham P. Association of HLA and TNF polymorphisms with the outcome of HBV infection in the South Indian population. Genes Immun. 2011 Oct;12(7):552-8. doi: 10.1038/gene.2011.32. Epub 2011 May 19. PMID: 21593777.

Ismail AM, Samuel P, Eapen CE, Kannangai R, Abraham P. Antiviral resistance mutations and genotype-associated amino acid substitutions in treatment-naïve hepatitis B virus-infected individuals from the Indian subcontinent. Intervirology. 2012;55(1):36-44. doi: 10.1159/000323521. Epub 2011 Feb 11. PMID: 21311172.

Ismail AM, Sachithanandham J, Eapen CE, Kannangai R, Abraham P. Performance of LigAmp assay for sensitive detection of drug-resistant hepatitis B virus minor variants in comparison with standard nucleotide sequencing. Mol Diagn Ther. 2014 Dec;18(6):655-63. doi: 10.1007/s40291-014-0119-y. PMID: 25208639.

Ismail AM, Puhazhenthi KS, Sivakumar J, Eapen CE, Kannangai R, Abraham P. Molecular epidemiology and genetic characterization of hepatitis B virus in the Indian subcontinent. Int J Infect Dis. 2014 Mar;20:1-10. doi: 10.1016/j.ijid.2013.12.007. Epub 2014 Jan 18. PMID: 24445226.

Ismail AM, Ramachandran J, Kannangai R, Abraham P. Antiviral efficacy of adefovir dipivoxil in the treatment of chronic hepatitis B subjects from Indian subcontinent. Indian J Med Microbiol. 2014 Jan-Mar;32(1):60-3. doi: 10.4103/0255-0857.124312. PMID: 24399391.

Ismail AM, Samuel P, Ramachandran J, Eapen CE, Kannangai R, Abraham P. Lamivudine monotherapy in chronic hepatitis B patients from the Indian subcontinent: antiviral resistance mutations and predictive factors of treatment response. Mol Diagn Ther. 2014 Feb;18(1):63-71. doi: 10.1007/s40291-013-0054-3. PMID: 24030850.

Daniel HDJ, Farzana J, Kannangai R, Kumar S, Lakshmi KM, Jashal CB, Dhamne H, Lahoti V, Kanjwani D, Abraham A, Coleman K, Srivastava A, Srivastava A, Abraham AM. Total and Neutralizing Antibody Seroprevalence of Hepatotropic Adeno-Associated Virus Among Healthy and Hemophilia A or B Population from India. Hum Gene Ther. 2025 Dec;36(23-24):1500-1508. doi: 10.1177/10430342251366208. Epub 2025 Aug 11. PMID: 40789666.