Lecturer & Medical Microbiologist, Department of Medical Laboratory Science, Faculty of Allied Health Sciences, University of Peradeniya.

Senior Registrar in Microbiology,Teaching Hospital Kandy,Sri Lanka

Registrar- MD dissertation,Faculty of Medicine,University of Peradeniya

Medical officer – Diploma trainee ,Department of Parasitology at Faculties of Medicine, Universities of Colombo, Ruhuna& Peradeniya, Medical Research Institute, Sri Lanka.

Lecturer & Medical Microbiologist, Department of Medical Laboratory Science, Faculty of Allied Health Sciences, University of Peradeniya (Present)

The forth International Medical Congress and a workshop organized on Sperm processing, cryopreservstion; organized by Peradeniya Medical School Alumni Association and Faculty of Medicine, Peradeniya, Sri Lanka

27^th Annual Academic Sessions of Kandy Society of Medicine.

Pre-congress Workshop on Mechanical Ventilation, for the 11^th annual scientific sessions of the Sri Lanka College of Paediatricians.

Continuous Positive Air Way Pressure – Ventilation workshop: conducted by Perinatal Society of Sri Lanka in collaboration with WHO Collaborating Centre for training of research in new borne care, All India Institute Of Medical Science.

How to get your research published; workshop organized by the PGIM, University of Colombo.

Use of Molecular Methods for the diagnosis of infectious diseases, workshop organized by Sri Lanka society for Microbiology

WHO and Medical Research Institute collaborated Consultative meeting on "Hepatitis B & C infections"

Fifth Annual Academic Sessions Of Sri Lanka College of Pulmonologists

Sixth Annual Academic Sessions Of Sri Lanka College of Pulmonologists

Advances in Immunology: implications for vaccinations organized for 127th Anniversary International Medical Congress of SLMA

RSymposium on Vaccine; organized by the Vaccine Forum of Sri Lanka

Workshop on Research Methodology and Data Analysis: organized by Faculty of Medicine, Peradeniya

Pre-congress workshop on Zoonotic Diseases organized for One Health International Conference

H D W S Jayawardana (Kudagammana), S T Kudagammana, Ishani Rodrigo:Knowledge About Folic Acid During Pregnancy Among Health Care Workers In Two Teaching Hospitals Of Sri Lanka. Abstracts presented at Annual Sessions of Sri Lanka College of Paediatricians, 2004

S T Kudagammana, H D W S Jayawardana (Kudagammana): Pilot Study On Monteleukast Prophylaxis On Children With ModerartePersistantAsthama. Abstract presented at Uva Medical Society Annual Sessions, 2008

H D W S Kudagammana, V Thevanesam, H M Wijedasa, P I Jayasekera, Pilot study on Identification Of Fungi In Bat Guano In Peradeniya Sri Lanka. Abstract presented at Annual Conference and Scientific Sessions of Sri Lankan Society for Microbiology, 2013.

H D W S Kudagammana, M kothalawala, K Arulampalam, SWeerakoon, A L Thennegedara, M Smarathunga, L K G Nandanie, P M A prasanna: A Study On Clinical Features, Epidemiological Factors And Response To Standard Therapy In Infective Endocarditis. Abstract presented at Annual Academic Sessions of Kandy society of Medicine, 2014.

H D W S Kudagammana, F Noordeen, V Thevanesam, Daniel Chu, J S M Peiris, N B Eriyagama, P M G A Jayawardana: Detection Of Corona Viruses In Guano Of The Indian Flying Fox(PteropusGigantieus) In Sri Lanka. Abstract presented at One Health International Conference, 2014