<http://ns.inria.fr/covid19/PMC7086648#title>	<http://purl.org/dc/terms/subject>	"Virus genera" .
<http://ns.inria.fr/covid19/PMC7086648#title>	<http://purl.org/dc/terms/subject>	"Northern European countries" .
<http://ns.inria.fr/covid19/PMC7086648#title>	<http://purl.org/dc/terms/subject>	"Virology" .