A man demonstrates how a Covid-19 breath test works, in Amsterdam
A man demonstrates how a Covid-19 breath test works accompanied by a health care worker, as the coronavirus disease (COVID-19) testing facilities in the Netherlands will in the coming months be equipped with breath tests capable of giving immediate results, to speed up testing and make it less intrusive in Amsterdam, Netherlands February 1, 2021. Picture taken February 1, 2021. REUTERS/Piroschka van de Wouw