COVID-19 Testing and Research by USJ Centre for Dengue Research

The Centre for Dengue Research at the very onset of the COVID-19 outbreak, initiated PCR testing for the SARS-CoV2 as it was of national importance to do so. Since identification of the first Sri Lankan patient on the 10th of March, they have currently carried out approximately 5000 PCR tests. Dedicated team of scientists have been working all seven days, late into the night, in order to provide such a service.

As an internationally reputed laboratory, carrying out cutting edge research on dengue pathogenesis and drug discovery, they are currently carrying out the following research activities in Collaboration with the National Institute of Infectious Disease, Colombo Municipality Council and University of Oxford.

  1. Whole genomic sequencing of the SARS-CoV2 strains in Sri Lanka:
    They have established the technique of whole genomic sequencing in Sri Lanka and so far, have completely sequenced 4 strains. They will continue this research of sequencing more virus strains to find out if certain strains contribute to virulence and if critical mutations occur in the viral strains in Sri Lanka
  2. Antibody responses to SARS-CoV2: They have already initiated these experiments and their initial results have been shared with relevant authorities. They will also study the neutralizing antibody responses to SARS-CoV2, using a technique developed by Prof. Linfa Wang, of Duke NUS. Determining the neutralizing antibodies will also help them to identify potential donors for convalescent plasma treatment if needed in those with severe disease
  3. Identifying biomarkers and inflammatory mediators that lead to severe disease: While most patients develop mild disease, some individuals develop pneumonia leading to fatalities. They are in the process of identifying inflammatory mediators and possible biomarkers that identify such people developing severe disease and also find out factors that cause severe disease.
  4. Serosuvillence study in the community to determine the extent of silent infection: In collaboration with the CMC they are carrying out surveillance to determine the level of silent infection by antibody testing in the community.
  5. T cell responses to the SARS-CoV2: They will be initiating T cell studies to determine cellular immune responses in mild vs severe disease to understand the factors leading to severe disease and prolong viral shedding.

Apart from the above, this team is collaborating with many other organizations in COVID-19 studies.

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