Dr. Rajika Dewasurendra carried out research mainly regarding malaria and leishmaniasis. She has worked in the fields of malaria host genetics and parasite genetics and have published her work in reputed peer reviewed journals. Dr. Dewasurendra is also acting as the data manager for a NIH (US) funded project on leishmaniasis where her role is to analyze the data of the populations with regard to host genetics associated with immunology, risk factors and related topics.