id	keyword
cjers-3779	covid-19
cjers-3779	severity
cjers-3779	measures
cjers-3779	pandemic
cjers-3779	countries
cjers-3779	european
cjers-3779	russia
cjers-3779	characteristics
cjers-3779	population
cjers-3779	stringency
cjers-3779	index
cjers-3779	health
cjers-3779	studies
cjers-3779	journal
cjers-3779	january
cjers-3779	canadian
cjers-3779	wave
cjers-3779	issn
cjers-3779	country
cjers-3779	situation
cjers-3779	correlation
cjers-3779	data
cjers-3779	authors
cjers-3779	relationship
cjers-3779	time
cjers-3779	model