Table 3.

Categories of COVID-19 social media content in the existing literature.

Category	Concepts and Related Literature
Plans and Measures	Disposition of government [48] Government’s handling of crisis [9] Preventive measures [8] Government response [12,49] Policies, guidelines and official actions [17] Notifications and measures been taken [50] Control measures [51]
Public Health Messages	Civic skills [41] Caring of self-interest [48] Education [18] Disease prevention [16] Popularization of prevention and treatment [49]
Rumor Control	Rumor Control [41] Falsehood correction [8] Counter-rumor [50]
Latest News	Latest news [9] New cases of COVID-19 [15]
Appreciation	Appreciation of front-line workers [9] Appreciation [8]
Community Resilience	Donations of money, goods or services [50] Making donations [49]