An online map of global coronavirus cases, compiled by Johns Hopkins University (JHU) is being viewed more than 1 billion times every day by people who want to see the figures for themselves.

But what if the numbers aren't painting the full picture?

For people who are comparing the data and attempting to divine how different countries' epidemics stack up against each other, experts have a warning: nations have different reporting standards, different approaches to testing, and different approaches to tracing cases, all of which makes such comparisons dangerously misleading.

Read full CNN report here.