Table 2.

Major topics discussed in COVID-19 tweets posted by e-cigarette nonusers (non-Ecig group) in the US, from March 5, 2020, to April 3, 2020.

Topic	Percentage of Tokens (%)	Keywords
Trump blame China	12.9	Trump, say, call, people, lie, Chinese, medium, government, response, crisis
Hospital caring and testing	10.7	Covid, need, patient, hospital, fight, help, care, worker, testing, family
COVID testing	10.5	Virus, corona, test, get, positive, people, symptom, day, know, go
Death toll	10.4	Case, death, report, number, test, new, confirm, day, first, state
Stop work and stay home	9.6	People, work, amp, stop, hand, go, die, stay, home, get
School and business shutdown	9	Due, spread, school, cancel, close, concern, health, public, plan, business
Relief bill	8.1	Vote, watch, time, hold, people, bill, play, run, relief, help
Stay home	8	Take, home, stay, covid, go, people, order, spread, good, say
Response to COVID	7.9	Thank, response, question, covid, share, late, update, ask, release, amp