Was there a reliable test in Feb 2020 at the time of the WHO article?. Who is to say that they are reporting the numbers correctly? For most of Jan 2020, china claimed covid was mild and wasn't spread human to human (and the WHO backed them up for some time as well).
There likely aren’t non-American sources for American data either, or non-European sources for European data. The only people with access to a given country’s data are the authorities of that country. Health statistics are not like election monitoring.