A computer image created by Nexu Science Communication together with Trinity College Dublin, shows a model structurally representative of a betacoronavirus which is the type of virus linked to COVID-19
The coronavirus is spreading in the Middle East, Europe and other parts of the world, while parts of China begin to lower their emergency response level as the number of new cases reported there continues to slow.
More deaths have been reported in Iran and Italy, while South Korea on Wednesday said an 11th person had died of the disease there.
Globally, at least 80,000 people have been diagnosed with the illness.