Ananda Wijewickrama

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Dengue viral infections are one of the most important mosquito-borne diseases in the world. Presently dengue is endemic in 112 countries in the world. It has been estimated that almost 100 million cases of dengue fever and half a million cases of dengue hemorrhagic fever (DHF) occur worldwide. An increasing proportion of DHF is in children less than 15(More)
BACKGROUND In Sri Lanka, varicella zoster virus (VZV) is typically acquired during adulthood with significant associated disease morbidity and mortality. T cells are believed to be important in the control of VZV replication and in the prevention of reactivation. The relationship between viral load, disease severity and cellular immune responses in primary(More)
BACKGROUND Liver involvement in acute dengue infection is frequently observed and sometimes leads to acute liver failure, with fatal outcomes. Many factors are thought to contribute to liver dysfunction, including hypoxic injury due to decreased perfusion, direct damage by the virus and immune mediated injury. In this study, we sought to identify the(More)
INTRODUCTION Dengue hemorrhagic fever (DHF) is a major cause of morbidity and mortality in tropical regions. Serum free calcium (Ca2+) is known to be important in cardiac and circulatory function. We evaluated association between serum Ca2+ level and severity of dengue. METHODOLOGY A cross-sectional study was carried out at a tertiary care private(More)
INTRODUCTION Genotyping of wild type of varicella zoster virus (VZV) in Sri Lanka would help to distinguish the VZV wild type infection from varicella vaccine associated infections. METHODS PCR-RFLP analysis of VZV ORF 38, 54 and 62 was used for genotyping in VZV from blood or vesicular fluid from 31 patients with chickenpox or herpes zoster. The PstI(More)
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