<http://ns.inria.fr/covid19/PMC7226900#title>	<http://purl.org/dc/terms/subject>	"Pandemics" .
<http://ns.inria.fr/covid19/PMC7226900#title>	<http://purl.org/dc/terms/subject>	"Gastrointestinal tract disorders" .
<http://ns.inria.fr/covid19/PMC7226900#title>	<http://purl.org/dc/terms/subject>	"Cholera" .