id	keyword
aseas-2537	sars
aseas-2537	health
aseas-2537	public
aseas-2537	singapore
aseas-2537	h1n1
aseas-2537	control
aseas-2537	measures
aseas-2537	moh
aseas-2537	outbreak
aseas-2537	government
aseas-2537	cases
aseas-2537	surveillance
aseas-2537	pandemic
aseas-2537	tan
aseas-2537	health control
aseas-2537	aseas
aseas-2537	healthcare
aseas-2537	quarantine
aseas-2537	general
aseas-2537	crisis