EPJ Data Science

Table A1.2 Topics used in our evaluation and a complete listing of keywords that defined each topic. The specific keywords were identified in early spring of 2020 just as more information about tracking of COVID-19 became available in the U.S.

From: Sweet tweets! Evaluating a new approach for probability-based sampling of Twitter

Topics and keywords
Covid	Social distancing	Working	Masks	Sanitizing	General virus	Symptoms	Treatment
covid	social distance	wfh	face mask (s)	hand sanitizer	virus	can’t smell	ventilator
covid-19	social distancing	working from home	mask (s, ed)	disinfect	flu	no Smell	remdesivir
covid19	six feet apart	work from home	PPE	disinfectant	pandemic	can’t taste	vaccine
covid test (ing)	6 ft apart	not working now	N95	lysol	sars	no taste	contact tracing
covid cases	6 feet apart	furlough	face cover (ing)	sanitize	pneumonia	cough
coronavirus	hunker down	reopen	face shield	sanitizing	Fauci	fever
rona	lockdown	reopening		sanitizer		chills
cv19	quarantine	stimulus checks		hand wash		sore throat
	quarantining	remote work		hand washing		asymptomatic
		working remotely		bleach
		unemployed		washing hands

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