News Releases

UWI researchers begin coronavirus genome sequencing project

For Release Upon Receipt - December 17, 2020

St. Augustine

A team of researchers from The UWI St Augustine has embarked on a project to analyse coronavirus genomes from infected individuals. The exercise will enhance Trinidad and Tobago’s capacity to identify different lineages of the virus and monitor mutations in order to track the virus’ spread, distinguish between local and newly imported cases, and to better understand the virus and our immune system’s response to it.

“The important thing,” says project lead Christine Carrington, a Professor of Molecular Genetics and Virology at The UWI St. Augustine’s Faculty of Medical Sciences, “is that whole genome sequencing of the virus can provide epidemiological insights that can inform public health responses. The Nanopore sequencing technology we are using is very rapid. The data is available in real-time, so the insights gained are actionable.”

Titled COVID-19: Infectious disease Molecular Epidemiology for PAthogen Control and Tracking (COVID-19: IMPACT), the project involves extracting and sequencing genomes of severe acute respiratory coronavirus 2 (SARS-COV-2) from patient samples. Genomes are the “hereditary blueprint” of all living organisms, including viruses, written on a strand of ribonucleic acid (RNA) in so-called RNA viruses like SAR-COV-2. RNA viruses frequently undergo mutation and by tracking these changes scientists are able to gather important data about diseases and their spread.

The data, Professor Carrington says, has many uses: “You can use it to determine whether a group of cases are linked to each other. For example, if you detect a number of cases in a workplace, you can address questions such as ‘are these infections related to each other? Has there been spread within the workplace? Or did each of the affected individuals acquire the infection independently, outside the workplace?’”

This project which is funded by a grant from the UWI-Trinidad and Tobago Research, Development and Impact (RDI) Fund can make an important contribution to the national COVID-19 response as Trinidad and Tobago seeks to balance public health with the need to boost economic activity. The research team includes investigators from UWI, Trinidad and Tobago’s Ministry of Health, the Caribbean Public Health Agency (CARPHA), the University of Oxford and the University of London.

Professor Carrington says the data will also be very useful when Trinidad and Tobago has access to a COVID-19 vaccine: “We will need to assess the impact of the vaccine. These molecular approaches can be used to monitor levels of viral diversity in the country and to estimate changes in viral population size.”

COVID-19: IMPACT is still in its early phase. Dr. Nikita Sahadeo, postdoctoral researcher on the project, has just generated the first five SARS-COV-2 genomes from Trinidad and Tobago. The project will expand Carrington says, “to get baseline data on the coronavirus lineages that have circulated in Trinidad and Tobago, the level of diversity we have, and how it has changed over time”. The project team will also analyse what is happening across the rest of the Caribbean with CARPHA facilitating this. “There are now hundreds of thousands of SARS-COV-2 genomes publicly available, but the vast majority is from the UK and the Caribbean region is very under-represented”

“Once we have that data,” says Professor Carrington, “we will be in a position to better answer questions that public health bodies might have. The aim with the establishment of this local capacity for rapid whole genome sequencing is to be able to respond to the public health bodies, not just with COVID-19 but also other infectious diseases in the future.”




About The UWI

For more than 70 years The University of the West Indies (The UWI) has provided service and leadership to the Caribbean region and wider world. The UWI evolved from a university college of London in Jamaica with 33 medical students in 1948 to an internationally respected, regional university with near 50,000 students across five campuses: Cave Hill in Barbados; Five Islands in Antigua and Barbuda; Mona in Jamaica, St. Augustine in Trinidad and Tobago; and an Open Campus. Times Higher Education has ranked The UWI among the top 1,258 universities in world for 2019, and the 40 best universities in its Latin America Rankings for 2018 and 2019. The UWI is the only Caribbean-based university to make the prestigious lists.

As part of its robust globalization agenda, The UWI has established partnering centres with universities in North America, Latin America, Asia, and Africa including the State University of New York (SUNY)-UWI Center for Leadership and Sustainable Development; the Canada-Caribbean Studies Institute with Brock University; the Strategic Alliance for Hemispheric Development with Universidad de los Andes (UNIANDES); The UWI-China Institute of Information Technology, the University of Lagos (UNILAG)-UWI Institute of African and Diaspora Studies and the Institute for Global African Affairs with the University of Johannesburg (UJ). The UWI offers over 800 certificate, diploma, undergraduate and postgraduate degree options in Food & Agriculture, Engineering, Humanities & Education, Law, Medical Sciences, Science & Technology, Social Sciences and Sport. As the region’s premier research academy, The UWI’s foremost objective is driving the growth and development of the regional economy. For more, visit


(Please note that the proper name of the university is The University of the West Indies, inclusive of “The”)