Department of Public Health & Pharmacology

Faculty of Veterinary Medicine & Animal Science

rskalupahana

Dr. R.S.Kalupahanaa

Senior Lecturer

Office Address :

Department of Veterinary Public Health & Pharmacology

Faculty of Veterinary Medicine & Animal Science,

University of Peradeniya, Peradeniya 20400, Sri Lanka

Email :  ruwanikalupahana@yahoo.com
Phone : 
Education :
  • BVSc – University of Peradeniya, Sri lanka
  • PhD (Cantab)- University of Cambridge, UK
  • PhD

  • Selected for President’s awards for scientific publication -2016.
  • /
  • National award for the excellence in agricultural Research -2017. First prize in the “Livestock and Fisheries Sector” at the award scheme by Sri Lanka Council for Agricultural Research Policy, Ministry of Agriculture
  • Best Paper Award -World’s Poultry Science Association Sri Lanka Branch (WPSA-SL) scientific sessions 2017.
  • Dr. Anurasiri Iddamalgoda award for the best poster presentation at the 68th Annual Scientific Sessions of the Sri Lanka Veterinary Association- July 2016.
  • NRC merit Award for research publication conferred by National Research Council- 2015.
  • Award for the best paper in animal production at the 64th Annual Scientific Sessions of Sri Lanka Veterinary Association- June 2012.
  • Award of a Postdoctoral Fellowship, University of Prince Edward Island, Prince Edward Island , Canada, 2010-2012.
  • Cambridge Commonwealth Trust scholarship to follow Postgraduate Studies at the University of Cambridge, October 1997- September 2000.
  • Overseas Research Students Awards Scheme offered by the Committee of Vice-Chancellors and Principals of the Universities of the United Kingdom.



Veterinary Public Health and Food Technology and Quality assurance to veterinary undergraduates.
Veterinary Public Health to postgraduates (MVSc and MSc- Postgraduate Graduate Institution of Science)



Foodborne bacterial zoonoses, Safety and Quality assurance of food of animal origin, antimicrobial resistance (AMR)


PRINCIPAL INVESTIGATOR

Year Awarding Body Project title and value Status
2018 Independent Donor, Sri Lanka Antimicrobial resistance associated with bacteria isolated from orphan elephant calves at the Elephant Transit Home and wild elephants in Sri Lanka; In progress
2017 University Research Grant Profiling of antimicrobial resistance (AMR) in planktonic and biofilm associated Escherichia coli isolated from commercial layer chicken farms in Kurunegala district of Sri Lanka, In progress
2016 University Research Grant Colonization with antibiotic resistant among healthy young adults In progress
2015 University Research Grant Microbiological quality of fermented milk products produced by small scale dairy producers in central province with special reference to hygienic practices utilized during processing. completed
2014 National Research Council (NRC) Identification of the prevalence of Methicillin resistant Staphylococcus aureus in pigs farms, farm employees and the environment in the pig-belt of Sri Lanka completed
2013 World Health Organization (WHO) Integrated surveillance of antimicrobial resistance and sub typing of Salmonella and Campylobacter species from human clinical samples, healthy farm animals, and animal originated food in a selected area of Sri Lanka, completed
2008 University Research Grant Monitoring the presence of Campylobacter in poultry broiler breeder flocks. completed
2008 Prime Ministers Initiative (PMI2),UK Quality assurance of milk and milk products completed
2007 University Research Grant Determination of the age of initial colonization of Campylobacter in broiler chicken completed
2006 National Science Foundation (NSF) Post-harvest control of Campylobacter in broiler meat through determination of CCP in broiler processing line and design of intervention measures. completed
2003 Council for Agricultural Research Policy (CARP) Further studies on repeat breeder cows in relation of endometritis and comparison of efficiency of different therapeutic agents. Principal Investigator. completed

CO-INVESTIGATOR
Year Awarding Body Project title and value Status
2017 University Research Grant Detection of types and sub types of human influenza viruses in samples (tracheal and nasal swabs) taken from the patients suspected with respiratory infections admitted to General (Teaching) hospital, Kandy In progress
2017 University Research Grant Profiling of antimicrobial resistance (AMR) in planktonic and biofilm associated Escherichia coli isolated from commercial layer chicken farms in Kurunegala district of Sri Lanka. In progress
2017 International Atomic Energy Agency (IAEA) International Atomic Energy Agency (IAEA)-RAS/5/078, Enhancing Food Safety laboratory capabilities and establishing a network in Asia to control veterinary drug residues and related chemical contaminants. In progress
2016 University Research Grant Colonization with antibiotic resistant bacteria among healthy young adults. In progress


Position MPhil. / PhD. Current Completed
Co supervisor PhD. 2 -
Mphi 3 1
MVSc 6 5
Supervisor MPhil. 1 -

Completed supervisions:
1. K.S.A.Kottawatta- Mphil Occurrence of thermotolerant Campylobacter in broiler meat and broiler flocks in four provinces of Sri Lanka .


RESEARCH PUBLICATIONS IN REFEREED JOURNALS

  • R S Kalupahana, L.Mughini-Gras, S A Kottawatta, S. Somarathne, C. Gamage and J A Wagenaar (2018) Weather correlates of Campylobacter prevalence in broilers at slaughter under tropical conditions in Sri Lanka. Epidemiology and Infection.
  • Duim, B., Verstappen, K. M., Kalupahana, R. S., Ranathunga, L., Fluit, A. C., & Wagenaar, J. A. (2018). Methicillin-resistant Staphylococcus pseudintermedius among dogs in the description of novel SCCmec variants. Veterinary Microbiology 213: 136-141.
  • Kottawatta, K. S., Van Bergen, M. A., Abeynayake, P., Wagenaar, J. A., Veldman, K. T., & Kalupahana, R. S. (2017) Campylobacter in Broiler Chicken and Broiler Meat in Sri Lanka: Influence of Semi-Automated vs. Wet Market Processing on Campylobacter Contamination of Broiler Neck Skin Samples. Foods 6 (12), 105.Index in PUB MED
  • Kalupahana RS, Rajapaksa DI, Fernando PS, Thilakarathne DS, Abeynayake P. (2016) Occurrence and characterization of nontyphoidal Salmonella in retail table eggs in Kandy district of Sri Lanka. Food Control. 2016 Apr 14 (doi:http://dx.doi.org/10.1016/j.foodcont.2016.04.024).
  • R Kalupahana and A.Silva-Fletcher (2016) A participant-Led programme for field veterinary training to identify bacteriological quality of milk from the farmer to the retail outlet. Food Control 63: 128-134
  • Kulasooriya, G.D.B.N, Jayasekara, P.P. Wijayarathna, J.M.S.M., Amarasiri, M.K.U.T., Mendis, B.C.G., Siribaddana,A., Dangolla, A., Kalupahana,R.S. and Fernando,B.R. (2016). Screening of elephants participating in the Esala Perahera for zoonotic and multidrug resistant bacteria. Sri Lanka Veterinary Journal. 62(A), pp.9–12.
  • R S Kalupahana, K S A Kottawatta, K S T Kanankege, M A P van Bergen, P Abeynayake and J A Wagenaar (2013) Colonization of Campylobacter spp in broiler chickens and laying hens reared in tropical climates with low biosecurity housing. Applied and Environmental microbiology 79(11): 393-395.
  • Kalupahana RS, Mastroeni P, Maskell D and Blacklaws BA (2005) Activation of murine dendritic cells and macrophages induced by Salmonella enterica serova Typhimurium, Immunology 115 (4): 462-72 DOI: 10.1111/j.1365-2567.2005.02180.x

  • Under Review:
  • Ruwani S. Kalupahana, Koen M. Verstappen, Chandika D. Gamage, Nilanthi.Dissanayake, Lakmali.Ranathunga, Haitske Graveland, Birgitta Duim and Jaap A. Wagenaar (2016). MRSA in pigs, farm employees and farm environment in pig-dense areas of Sri Lanka. Submitted to Applied and Environmental Microbiology (AEM00256-17)
  • Kinnison T., Silva-Fletcher A., Kalupahana R.S. and Thuranira-McKeever C. Multi-Level Impact of Continuing Professional Development through Distance Learning on Sri Lanka’s Veterinary Sector. Submitted to Journal of Learning for Development.

BOOK CHAPERS AUTHORED
  • Newell, D. G., Mughini-Gras, L., Kalupahana, R. S., & Wagenaar, J. A. (2017).Campylobacter epidemiology—Sources and routes of transmission for human infection In Klein, G. (Ed) Campylobacter Features, Detection, and prevention of Foodborne Disease (pp. 85-110): Academic Press, Elsevier, UK .
  • Wagenaar, J. A., Newell, D. G., Kalupahana, R. S., & Mughini-Gras, L. (2015). Campylobacter: animal reservoirs, human infections, and options for control. In Sing, A. (Ed), Zoonoses-Infections Affecting Humans and Animals (pp. 159-177): Springer, new York, London
  • Tobin, G., Kalupahana, R., & Kulka, M. (2013). Plant Based Natural Products and Breast Cancer: Considering Multi-Faceted Disease Aspects, Past Successes, and Promising Future Interventions. In Kulka, M. (Ed), Using Old Solutions to New Problems-Natural Drug Discovery in the 21st Century: In Tech. London, SE19SG - UNITED KINGDOM .
PEER REVIEWED PRESENTATIONS AT NATIONAL/INTERNATIONAL CONFERENCES/SYMPOSIA
PUBLISHED AS FULL PAPERS
  • 1. H.C.Gallage, K.S.A.Kottawatta, H.M.T.K.Karunaratha, R.S.Kalupahana (2017). A preliminary study on Methicillin resistant Staphylococcus(MRS) in commercial eggs collected from layer farms in Kurunegala district. Proceedings of Peradeniya university international research sessions, Sri Lanka 2017. Volume 21. 24th November 2017. .
  • S.A.I.C.Subasinghe, H.M.T.K.Karunaratha, S.P.Kodithuwakku, H.M.H.N.Bandara, R.S.Kalupahana, K.S.A.Kottawatta (2017). Antimicrobial resistance profiles of planktonic and biofilm associated Escherichia coli in poultry layer farms. XVIth annual scientific sessions, world’s poultry science association, Sri Lanka branch. September 15th 2017.
  • J.C.Hapugoda, M. R. Sooriyarachchi, R.S.Kalupahana and D.A.Satharasinghe (2017). Joint Modeling of Mixed Responses: An Application to Poultry Industry. Annual International Conference of 6th Computational Mathematics, Computational Geometry & Statistics and Operations Research and Statistcs.
  • S.I.C.A. Dharmarathna, R.S.Kalupahana, K.S.A.Kottawatta, A.R.C.Gunasena and P.Abeynayake (2010) Transmission of Camylobacter in poultry. Peradeniya university research sessions Sri Lanka, Vol.15, held on 16th December 2010.
  • K.M.G.S.Weerasooriya, R.S.Kalupahana and P.Abeynayake (2008). Occurrence of Salmonella contamination in poultry meat. Peradeniya university research sessions Sri Lanka, Vol.13, held on 18th December 2008.
  • R.S.Kalupahana, K.S.A.Kottawatta, J.A.R.Pushpakumara, P.Abeynayake (2008). Determination of the age of initial colonization of Campylobacter in broiler chicken. Proceedings of the Peradeniya university research sessions Sri Lanka, Vol.13, held on 18th December 2008.

PUBLISHED AS FULL PAPERS
  • H.M.T.K. Karunarathna, H.G. Semple, S.A.I.C Subhasinghe, A. Kalupahana, K.S.A. Kottawatta and R.S. Kalupahana (2018) Detection of mecA gene in Staphylococcus spp isolated from poultry layer birds: High possibility of disseminating methicillin resistance determinant. Presented at the 70th Annual Convention of the Sri Lanka Veterinary Association, 14 June, Kandy
  • S.A.I.C. Subhasinghe, H.M.T.K Karunaratha, S.P. Kodithuwakku, H. M. H. N. Bandara, R.S Kalupahana, K.S.A. Kottawatta (2018) Profiling of antimicrobial resistance (AMR) in E. coli associated with biofilms in layer chicken farms in Krunegala district. Presented at the 70th Annual Convention of the Sri Lanka Veterinary Association, 14 June, Kandy.
  • H.N.P.S De Zoysa1, J.C.Hapugodoa2, P.P.Jayasekera3 and R.S.Kalupahana Possible influences of management practices on microbiological quality of bulk milk produced by small scale dairy farmers. Presented at the 70th Annual Convention of the Sri Lanka Veterinary Association, 14 June, Kandy.
  • S.A.I.C.Subhasinghe, H.M.T.K.Karunaratha, S.P.Kodithuwakku, H.M.H.N.Bandara, R.S.Kalupahana, K.S.A.Kottawatta (2018). Biofilm and planktonic cells of Escherichia coli and their antimicrobial resistance pattern. Presented at the 11th Asia Pacific Poultry Conference, 25-27 March 2018, Thailand
  • S.A.I.C.Subhasinghe, H.M.T.K.Karunaratha, S.Uluwatta, R.S.Kalupahana, K.S.A.Kottawatta (2017). Prevalence of salmonella, campylobacter, Escherichia coli, staphylococcus spp and detection of antimicrobial resistance (AMR) associated with E.coli isolated from commercial poultry layer farms in Kurunegala district. 69th annual scientific sessions of the Sri Lanka Veterinary Association, 26th May 2017.
  • Semple H.G, Karunarathna H.M.T.K, Kottawatta K.S.A, Subasinghe I., Kalupahana A., Nevel A. and Kalupahana R.S. (2017). Cross sectional survey to find prevalence of antimicrobial resistance in Staphylococcus species from layer hens in the Kurunegala district of Sri Lanka. Presented at the INSPIRE national Intercalators’ research Conference, Bristol, UK held in October 2017.
  • Semple H.G, Karunarathna H.M.T.K, Kottawatta K.S.A, Subasinghe I., Kalupahana A., Nevel A. and Kalupahana R.S. (2017). Cross sectional survey to find prevalence of antimicrobial resistance in Staphylococcus species from layer hens in the Kurunegala district of Sri Lanka. Presented at the INSPIRE national Intercalators’ research Conference, Bristol, UK held in October 2017.
  • M.K.U.T.Amarasiri, B.R.Fernando, P.S.Fernando and R.S.Kalupahana (2017), Assessment of suitability of indirect milk quality tests in determining the microbial load of raw milk. Presented at the 69th Annual scientific sessions of the Sri Lanka Veterinary Association.
  • P.P. Jayasekara , J.C. Hapugoda, S.A.I.C. Subasinghe and R.S. Kalupahana (2017) Antimicrobial resistance of contaminating bacteria of curd and yoghurt produced by small-scale processors in Kandy district. Presented at the 69th Annual scientific sessions of the Sri Lanka Veterinary Association 26th May 2017
  • Nihal Pushpakumara, Don Bamunusinghage, Kottawattage Sanda Arunika Kottawatta, Preeni Abeynayake, Ruwani Sagarika Kalupahana (2016). Investigation of antimicrobial resistance in escherichia coli isolated from wild animals presented to a regional wildlife health centre in Sri Lanka. 4th International One Health Congress & 6th Biennial Congress of the International Association for Ecology & Health , Melbourne, Australia.
  • Dulari Samanthika Thilakarathne, Suraj Niroshan Gunawardana, Sanda Arunika Kottawatta, Preeni Abeynayake, Kim Picozzi, Ruwani Kalupahana (2016). Prevalence and antimicrobial susceptibility of salmonella and Escherichia coli in retail chicken from small scale shops in Kandy district, Sri Lanka. 4th International One Health Congress & 6th Biennial Congress of the International Association for Ecology & Health , Melbourne, Australia.
  • Ruwani Kalupahana, Koen Verstappen, Chandika Gamage, Nilanthi.Dissanayake, Lakmali.Ranathunga, Nihal Pushpakumara Don Bamunusinghe and Jaap Wagenaar (2016). Molecular Characterization of MRSA in pigs, farm employees and farm environment in selected areas of Sri Lanka. 4th International One Health Congress & 6th Biennial Congress of the International Association for Ecology & Health , Melbourne, Australia.
  • K.M. Verstappen, R.Kalupahana, L.Ranathunga, A.L.Zomer, B.Duim, J.A.Wagenaar (2015). Methicillin-resistant Staphylococcus speudointermedius among dogs in Sri Lanka. ASM-ESCMID Conference on Methicillin-resistant Staphylococci in Animals: Veterinary and Public Health Implications, Chicago, Illinois.
  • Herath H.M.G.A., Salgadu, M.A., Kulasooriya, G.D.B.N., Kothalawala, M., Thevanesam, V., Kalupahana, R.S., Jinadasa, H.R.N.(2015). Antimicrobial susceptibility pattern of Klebsiella isolates from animal and human clinical samples. 4th Annual conference and scientific sessions of Sri Lanka Society for Microbiology
  • Kulasooriya, G.D.B.N., Siribaddana, A.D., Kalubowila, U.,Athukorala, G.P., Dassanayake, D.L.B., Pathirathna, H.S., Wickramasekara, K., Senevirathne, H.M.K.P., Upul, A., Kalupahana, R.S., Fernando, B.R.(2015) Detection of Mycobacterium tuberculosis complex in feces by PCR. Kandy Teaching Hospital Academic Sessions 2015.
  • Bhagya Kulasooriya, Anoma Siribaddana, Kapila Senevirathne, Punyajeeva Athukorala, Dinesh Dassanayake, Hirantha Pathirathne, Ruwani Kalupahana and Ruchika Fernando (2016), Evaluation of PCR primers to detect mycobacterium tuberculosis complex in feces, European Respiratory Journal.
  • G.D.B.N Kulasooriya, P.P. Jayasekara, J.M.S.M Wijayarathna, M.K.U.T. Amarasiri, B.C.G. Mendis, A. Siribaddana, A. Dangolla, R.S. Kalupahana and B.R. Fernando (2016). Profiling of bacterial public health hazards associated with elephants participating in the “Esala Perahera” , Presented at the 68th Annual Convention of the Sri Lanka Veterinary Association, 15-16 July, Kandy.
  • P.P. Jayasekara , J.C. Hapugoda, and R.S. Kalupahana (2016), Identification of possible contamination points in small-scale yoghurt processing plants in Kandy district, Proceedings of the Peradeniya University International Research Sessions, 4-5 November 2016, Peradeniya.
  • G.M.P.Kumara, Bhagya Kulasooriya, Ruchika Fernando, R.C.Rajapaksha, Anoma Siribaddana, R.S. Kalupahana, W.D.S.J. Wickramasinghe, Charitha Mendis, A. Danolla (2015): A Clinical Case of Tuberculosis in a Captive Elephant in Sri Lanka. The Sri Lanka Veterinary Journal: 67th Annual Convention of the Sri Lanka Veterinary Association : pp 61.
  • K.S.A. Kottawatta, J.M.K.V. Bandara, D.S. Thilakarathne, D.I.G. Rajapaksha, P. Abeynayake and R.S. Kalupahana (2014) Occurrence of motile Salmonella in broiler flocks and antimicrobial susceptibility pattern of isolates. Proceedings of the Peradeniya University International Research Sessions, Sri Lanka, 4-5th July 2014.
  • G.D.B.N. Kulasooriya, M.A. Salgadu, D.I.G. Rajapaksha, K.G.R.N. Karunarathne, M. Kothalawala, V. Thevanesam, R.N. Jinadasa, R.S. Kalupahana (2014), Antimicrobial resistance of Escherichia coli isolated from human faecal samples in the Kandy district. Peradeniya University International Research Sessions : pp 366.
  • D.S. Thilakarathne, R. Jinadasa, D.I.G. Rajapaksha, K.G.R.N Karunarathne, T.P.M.S.D. Bandara, M. Kothalawala, V. Thevanesam and R.S. Kalupahana(2013). Multidrug resistance of E coli from chicken meat and human stool samples. 2nd Annual Conference and Scientific Sessions of Sri Lanka Society for Microbiology.Vol.1, p17(2013).
  • A.M.H.Abeykoon, P.Abeynayake and R.S.Kalupahana (2013), Preliminary investigation of microbiological and compositional quality of different types of liquid cow milk available in Kandy city limits. Presented at the Annual Scientific Sessions of the Sri Lanka Veterinary Association,Vol.60, p 25 , 13th June 2013.
  • D.S. Thilakarathne, W.S.N. Gunawardana, D.I.G. Rajapaksha, I. S. Abeygunawardana, P. Abeynayake and R.S. Kalupahana (2013). Antimicrobial susceptibility pattern of Staphylococci isolated from bovine mastitic milk in the central province of Sri L anka with special reference to methicillin resistance. Annual Scientific Sessions of the Sri Lanka Veterinary Association,Vol.60, p 20 2013).
  • D.I.G.Rajapaksha, D.S.Thilakarathne, P.Abeynayake, P.S.Fernando and R.S.Kalupahana (2013) Prevalence of Salmonella in retail raw table eggs in Kandy Municipal area, Presented at the annual scientific sessions of the Sri Lanka Veterinary Association, 11th May 2012.
  • D.S.Thilakarathne, K.S.A.Kottawatta, R.S.Kalupahana and P. Abeynayake (2012) Investigation of Campylobacter, Salmonella, Escherichia coli and Staphycoccus aureus in chicken meat at small scale retail shops in Kandy city limits, Presented at the annual scientific sessions of the Sri Lanka Veterinary Association, 11th May 2012.
  • K.M.G.S.Weerasooriya, R.S.Kalupahana and P.Abeynayake (2012). Antimicrobial resistance of food borne Salmonella isolated from a poultry processing plant. Presented at the annual scientific sessions of the Sri Lanka Veterinary Association, 11th May 2012.
  • Subah L. Jayasekara, Rathnamali Perera, Asitha N. Ekanayake, Kanchanamala Munasinghe, Nisha K. Liyanage, Ruwani S. Kalupahana, Sanda A. Kottawatta and Karven J. Cooray(2009) Isolation and identification of Campylobacter jejuni in raw meat and milk products in Colombo city. Poster presentation at the 15th International Workshop on Campylobacter, Helicobacter and Related Organisms. 2-5 September 2009, Niigata, Japan.
  • K.S.A. Kottawatta, P. Abeynayake, A.R.C. Gunasena And R.S. Kalupahana (2008). Occurrence of Thermotolerant Campylobacter in broilers from four provinces of Sri Lanka. The Sri Lanka Veterinary Journal. 55. pp. 19. 60th annual convention and scientific sessions of the Sri Lanka Veterinary Association.29-30th May 2008.
  • A.W.Kalupahana, P.G.A.Pushpakumara and R.S.Kalupahana (2008) Application of PCR based molecular diagnostic technique for the detection of Bovine Herpes Virus-I antigen in cattle semen. Presented at the 60th Annual convention and scientific sessions of the Sri Lanka Veterinary Association, 29-30th May 2008.
  • K.S.A. Kottawatta,R.S. Kalupahana J.A. Wagenaar and P. Abeynayake (2007). Occurrence of thermotolerant Campylobacter in broilers in Sri Lanka. Journal of Zoonoses and Public Health. 54 (1). Pp 140. (poster presentation). 14th international workshop on campylobacter, helibacter and related organisms, Rotterdam, the Netherlands, 2-5 September 2007.
  • K.S.A. Kottawatta, R.S. Kalupahana And P. Abeynayake (2007). Monitoring of foodborne pathogens in broiler meat with special reference to Campylobacter and Salmonella. The Sri Lanka Veterinary Journal. 54. pp. 24. 59th annual convention and scientific sessions of the Sri Lanka Veterinary Association.
  • N.W.C.J.B. Neelawathura, K.G.S.K. Senarathna, K. Abirami, G.D.R.K. Perera, K.S.A. Kottawatta, R.S. Kalupahana, P.G.A. Pushpakumara And B. Alexander (2007). A combination of Parenteral antibiotic and intra-uterine enrofloxacin to overcome pyometra in cattle and buffaloes. The Sri Lanka Veterinary Journal. 54. pp. 13.
  • K.S.A. Kottawatta, J.A. Wagenaar, R.S. Kalupahana And P. Abeynayke (2007). Preliminary results on the occurrence of thermotolerant Campylobacter in broilers in Sri Lanka. South East Asia western pacific abstracts. Presented at the WHO global slam-surv advanced workshop. January 15-20. Bangkok, Thailand
  • A.Saman, G.A.Gunawardana, R.S.Kalupahana, P.S.Fernando, S.Puvanendiran (2006). Microbiological quality of chicken sausages and meat balls collected from Kandy suburban areas. 58th annual convention and scientific sessions of the Sri Lanka veterinary association, Hotel Tourmaline, 26-27 May 2006.
  • A.W. Kalupahana, S. Budhia, R.S. Kalupahana and B.A. Blacklaws.(2005) Analysis of T cells receptor b variable (TCR vB) region gene expression in sheep with Madie-visna virus (MVV) infection. Proceedings of the Peradeniya University research Sessions, 10 November 2005.
  • B.R. Fernando, H.M.T.K. Karunarathne, K.S.A. Kottawatta, R.S.Kalupahana, P. Abeynayake and G.S.P. de Gunawardena (2005) Histopathological changes of the endometrium and antimicrobial susceptibility of aerobic bacteria associated with endometritis of dairy cows. Proceedings of the Peradeniya University research Sessions, 10 November 2005.
  • U.K.I.Ariyaratne, R.S.Kalupahana, P.G.A.Puskpakumara, T.G.Wijewardana and M.Wijemanne (2004) Serological evidence of infectious bovine rhinotracheitis / Infectious pustular vulvovaginitis (IBR/IPV) in cattle in selected locations in Sri Lanka. Proceedings of the Peradeniya University research Sessions, 10 November 2004.
PRESENTATIONS
  • Ruwani Kalupahana (2017), Invited speech on “ Monitoring AMR in Sri Lanka” at seminar and workshop on environmental drivers of antimicrobial resistance in Sri Lanka organized by the University of York in collaboration with International water management institute, 27th November 2017, Galadari Hotel, Colombo.
  • N. Liyanagunawardena, P.S. Fernando, C. Karunarathna, N.P. French, A. Midwinter, J. Zhang, R.S. Kalupahana J. Benschop (2018) Isolation and identification of Salmonella spp from Sri Lankan poultry for a Molecular Epidemiology Study, Presented at the 70th Annual Convention of the Sri Lanka Veterinary Association, 14 June, Kandy.
  • P.P. Jayasekara , J.C. Hapugoda, K.Kuruppu, A.M.H.Abeykoon, and R.S. Kalupahana and A.S. Fletcher (2017) Preliminary assessment of microbiological and compositional quality of ready to drink milk products in Kandy district, Sri Lanka. Proceedings of the 3rd International conference on global food security, 3-6th December, Cape Town, South Africa.
  • P.P. Jayasekara , J.C. Hapugoda, and R.S. Kalupahana (2017) Potentials of improving microbiological quality and safety of fermented dairy products manufactured by small-scale processors in Kandy district, Sri Lanka. Proceedings of the 3rd International conference on global food security, 3-6th December, Cape Town, South Africa.
  • Lakmali Ranathunga and Ruwani Kalupahana (2016) Monitoring Salmonella in broiler meat produced by large-scale poultry processing plants in Sri Lanka, Proceedings of XXV World’s Poultry Congress, 5-9 September 2016, Beijing, China
  • R.S. Kalupahana, K.M. Verstappen, C.D. Gamage, N. Dissanayake, L..Ranathunga and J.A. Wagenaar (2016). Detection of methicillin resistant Staphylococcus aureus in pigs, farm employees and farm environment in selected areas of Sri Lanka. Proceedings of the Peradeniya University International Research Sessions, Vol 20, 4-5th November, 2016.
  • Kulasooriya, G.D.B.N., Amarasiri, M.K.U.T., Abeynayake, P., Kalupahana, R.S., (2015) Campylobacter is Present as a Contaminant in Chicken Meat and Products but Absent in Traditional Chicken Curries in Sri Lanka. 18th International workshop on Campylobacter, Helicobacter and related organisms; Rotura, NewZealand
  • Ruwani Kalupahana (2015). Presentation on “Salmonella and Campylobacter in poultry products; challenges for Sri Lankan poultry producers” at the XIVth Annual Scientific Sessions World’s Poultry Association Sri Lanka Branch, , 5th September 2015 , Colombo
  • Kalupahana, R.S.,Kulasooriya G.D.B.N., (2015): Prevalence of Salmonella, Campylobacter and E.coli in Raw Chicken Meat and Processed Chicken Products in the Kandy Municipality Area. 4th Annual conference and scientific sessions of Sri Lanka Society for Microbiology
  • R.S. Kalupahana, K.S.A Kottawatta, S. Somarathne, G. C. Hettiarachchi, P Abeynayake and J.A. Wagenaar.(2011) Unexpected seasonality in Campylobacter prevalence in broilers in the tropical climate of Sri Lanka. This abstract has been published in the 16th conference for Campylobacter, Helicobacter and Related organisms (CHRO) held in Vancouver, Canada.
  • Ruwani Kalupahana and Marianna Kulka (2010). Human mast cells express estrogen receptors and may be beneficial in breast cancer therapy. 2010 Cancer Research Symposium, Beatrice Hunter Cancer Research Institute, Canada. 9 November 2010
  • R.S.Kalupahana, K.S.A.Kottawatta, P.Abeynayake (2009). Study on the prevalence and the age at initial colonization of campylobacter in broiler flocks in central province of Sri Lanka. FAO/IAEA international symposium on sustainable improvement of animal production and health. 8-11 June 2009. Vienna, Austria
  • R. S. Kalupahana, K.S.A. Kottawatta , P. Abeynayake and J.A. Wagenaar(2009) Occurrence of Campylobacter in layer flocks at different ages in a selected area in Sri Lanka. Poster presentation at the 15th International Workshop on Campylobacter, Helicobacter and Related Organisms. 2-5 September 2009, Niigata, Japan
  • R.S. Kalupahana, K.S.A. Kottawatta, P. Abeynayake And J.A. Wagenaar (2008). Determination of the age of initial colonization of Campylobacter in broiler flocks in two selected farms in Sri Lanka. Programme and abstracts of the 2008 Canadian Campylobacter conference. September 25-26, 2008.
  • Ruwani Kalupahana, Sanda Kottawatta, Preeni Abeynayake and Jaap Wagenaar (2008) The occurrence of thermotolerant Campylobacter in poultry reared in different production systems and poultry meat in retail markets in Sri Lanka. Proceedings of the Gobal Meet on Veterinary Public Health, 19 -21 November 2008, Lucknow, India.
  • Ruwani Kalupahana, Linda van Der Graff, Jaap Wagenaar and Marcel A.P.van Bergen (2006) Use of pulse-field gel electrophoresis in subtyping of ovine Campylobacter fetus isolates from Netherlands. Proceedings of the Peradeniya University research Sessions, Vol 11, November 30, 2006.
  • R.S.Kalupahana and B.A.Blacklaws (2003) Interaction of Salmonella Typhimurium with murine macrophages and dendritic cells. Proceedings of the Peradeniya University research Sessions, 23 October 2003.