Medical Test kits (382200) imports by country in 2017

Additional Product information: Diagnostic reagents based on polymerase chain reaction (PCR) nucleic acid test.

Category: Medical Test kits/ Instruments, apparatus used in Diagnostic Testing

The data here track previously existing medical devices that are now classified by the World Customs Organization as critical to tackling COVID-19

In 2017!? How could all these countries know this in advance?

https://wits.worldbank.org/trade/comtrade/en/country/ALL/year/2017/tradeflow/Imports/partner/WLD/nomen/h5/product/382200?s=09