<http://ns.inria.fr/covid19/PMC6926909#body_text>	<http://purl.org/dc/terms/subject>	"Epidemiology" .
<http://ns.inria.fr/covid19/PMC6926909#body_text>	<http://purl.org/dc/terms/subject>	"Europe" .
<http://ns.inria.fr/covid19/PMC6926909#body_text>	<http://purl.org/dc/terms/subject>	"Infectious diseases" .
<http://ns.inria.fr/covid19/PMC6926909#body_text>	<http://purl.org/dc/terms/subject>	"Differential equations" .
<http://ns.inria.fr/covid19/PMC6926909#body_text>	<http://purl.org/dc/terms/subject>	"14th-century health disasters" .