React
Firebase
WHO disease API

The API is updated at set intervals, determined by the WHO infotech centers. So, it depends completely on their fetch rates.

Some country data overlaps others

The reason for this is the WHO API that has been used here. Since the number of cases or value of the circle of countries like India and the USA is much larger than the neighbouring country cases, it has overlapped some countries like China, Mexico and Bangladesh where comparatively there are very few cases encountered. On the split of the graph, we may acquire the required map circles but that will need the software to generate multiple zonal maps or country maps for neighbouring countries. To fix this issue, I have created a dropdown and live count of cases alongside to help provide the required metrics in a better way.