Dr. Champa Neelakanthi Ratnatunga

Tel No 94 81 2396530
Fax 94 081 2389106
Office Address Department of Microbiology, Faculty of Medicine, University of Peradeniya

Educational /professional Qualifications

  • MBBS (Peradeniya) 2007
  • MSc Bio-statistics  (Peradeniya) 2010
  • MPhil (Peradeniya)  2014

Undergraduate teaching

Lectures, practicals and group discussions for

  • Medical students  - Faculty of Medicine, University of Peradeniya
  • Medical Laboratory Science students-Faculty of Allied Health Sciences, University of Peradeniya

Lectures for

    • Dental students – Faculty of Dental Sciences, University of Peradeniya
    • Public Health Inspector trainees – Regional Health Training Center, Kadugannawa, Sri Lanka

Post graduate teaching      

    • Msc Medical Microbiology –Post Graduate Institute of Science, University of Peradeniya
Research interests
    • Immunology –  Basic Immunology and its role in pathogenesis of infection
    • Interferon Gamma release assays in the diagnosis of tuberculosis (TB): Application of ELISpot technique used for rapid diagnosis of TB in Sri Lanka and its usefulness and validity in the Sri Lankan context.
    • Diagnostics related to Mycobacterial disease
    • Medical education methodology and English for special purposes in medical education

Peer reviewed  indexed journal publications

  1. Fernando DMG, Kaluarachchi CI, Ratnatunga CN. Necrotizing fasciitis and death following an insect bite. Am J Forensic Med Pathol. 2013;34(3):234-6. doi:10.1097/PAF.0b013e3182a18b0b.
  2. Dassanayake DLB, Wimalaratna H, Nandadewa D, Nugaliyadda A, Ratnatunga CN, Agampodi SB. Predictors of the development of myocarditis or acute renal failure in patients with leptospirosis: An observational study. BMC Infect Dis. 2012;12(1):4. doi:10.1186/1471-2334-12-4.
  3. Ratnatunga Champa N. The evolution and role of interferon gamma release assays (IGRAs) in moderate and low income settings. Sri Lanka Journal of Infectious Diseases. 2014;4(2):56-66.
  4. Wijetunge S, Ratnatunga NVI, Abeysekera DTDJ, Wazil AWM, Selvarajah M, Ratnatunga CN. Retrospective analysis of renal histology in asymptomatic patients with probable chronic kidney disease of unknown aetiology in Sri Lanka. Ceylon Med J. 2013;58(4):142-7.
  5. Herath CHP, Ratnatunga NVI, Waduge R, Ratnayake P, Ratnatunga CN, Ramadasa S. A histopathological study of cutaneous leishmaniasis in Sri Lanka. Ceylon Med J. 2010;55(4):106-11.

Conference presentations - International

    1. CN Ratnatunga, V Thevanesam, D Medagedara, NLA  Dissanayaka, KGRA Kumara. A case-control comparison of  the Mantoux test and a commercial interferon gamma release assay  (IGRA) in adults: First report in a Sri Lankan setting.  Asia Pacific Society for Respirology Annual Congress, November 2014. Respirol. 2014; 19(suppl.3):55
    2. CN Ratnatunga, M Rajakrishna, S Attanayake, C Ellawela, D Rajaguru, J Dassanayake, S Senanayake, M Jayasundara. English language proficiency and academic achievement: Why English matters in medical education. 3rd South East Asian Regional Association for Medical Education (SEARAME) Conference, November 2014.Proceedi ngs OP-1-08.p47.
    3. C.N. Ratnatunga, V Thevanesam, D Nandadeva, D Madegedara, KGRA Kumara. Cross sectional screening of health care workers (HCW) at a regional chest clinic with an interferon gamma release assay (IGRA): First report from Sri Lanka. European Respiratory Society, Annual Congress 2014. Eur Respir J 2014; 44 (Suppl.58): 2680.
    4. C.N. Ratnatunga. Attitudes and practices towards hand hygiene: How do we teach medical students to wash their hands? 3rd South East Asian Regional Association for Medical Education (SEARAME) Conference, November 2014. Proceedings PP-01-1. P78.
    5. T.S.M.H. Dharmarathna, C.N. Ratnatunga. When motivation and competence act together to influence academics’ research out-put, faculty development alone may not work.  Accepted for 12th Asia Pacific Medical Education Conference (APMEC) and 3rd International Conference on Faculty Development in Health Professions (ICFDHP) – February 2015.
Conference presentations - Local
    1. CN Ratnatunga, D Madegedara,  KGRA Kumara V Thevanesam. Effect of number of sputum samples examined and sputum processing on the efficacy of smear microscopy in diagnosis of pulmonary tuberculosis.  Kandy Society of Medicine 36th Annual Academic Sessions 2014. Book of Abstracts p62 (S9OP3).
    2. CN Ratnatunga  S Wickramasingha, D Medagedara, KGRA Kumara, V Thevanesam. Feasibility and cost of molecular identification of mycobacteria isolated from clinical samples.  International Peradeniya University Research Sessions (iPURSE) 2014. Proceedings vol.18 HS194.p265
    3. DMG Fernando, CN Ratnatunga, APMR Athapaththu, RMUC Ratnayake. Minor trauma causing death due to a gangrenous upper limb. College of Forensic Pathologists of Sri Lanka 11th Annual Academic Sessions. 2013. Programme and abstracts p48 (OP-21)
    4. CN Ratnatunga, AMPR Athapaththu, RMUC Ratnayake. Necrotizing fasciitis caused by Staphylococcus aureus: A case report. DMG Fernando, The 35th annual academic sessions of the Kandy Society of Medicine 2013. Book of abstracts p127.
    5. CN Ratnatunga. A method of facilitating student -teacher communication Peradeniya University Research sessions 2011. Proceedings vol. 16 p22.

Research Grants

  1. University Research Grant – RG/2012/36  (1/1/2012 to 30/11/2013) Project title: Accuracy and cost effectiveness of molecular identification of mycobacterial isolates from clinical specimens
  2. Handling grant as research student: National Science Foundation – RG/2011/HS/08 (30/12/2011- 31/12/2014) and RG/2011/EQ/25 (30/12/2011- 31/12/2014) - Project: Use of a commercial interferon gamma release enzyme linked immunospot assay in the diagnosis of active and latent pulmonary tuberculosis in a Sri Lankan adult population


    1. Certificate course in immunological techniques - Institute of Biochemistry, Molecular Biology and Biotechnology, University of Colombo –January 2014
    2. Certificate course in molecular biology techniques - Institute of Biochemistry, Molecular Biology and Biotechnology, University of Colombo – June 2012
    3. Staff development programme –Medical education unit, Faculty of Medicine, University of Peradeniya – August 2011

Institutional activities

  • Member student affairs committee
  • Staff Coordinator –English language subcommittee
  • Member of peer review group
Other interests
  • Drama and debating
  • Student welfare
  • Social service






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