Table 2.

Median public engagement across outbreak stages and message types (January 1 to August 31, 2020).

Message typea	Likes					Retweets
	All stages	Precrisis stage	Initial event stage	Maintenance stage	All stages		Precrisis stage	Initial event stage	Maintenance stage
All	819.0	437.0	974.0	582.0	603.0		473.0	753.0	351.0
Risk messages	598.5	686.0	475.5	630.0	409.5		766.0	385.5	381.0
Warnings	785.0	1678.0	913.0	513.0	614.5		1801.0	710.0	335.0
Preparations	594.5	343.0	974.0	464.0	397.5		438.0	708.0	273.0
Uncertainty reduction	841.5	389.0	1025.0	678.0	658.5		438.0	770.0	409.0
Efficacy	852.0	560.0	950.5	590.0	683.0		623.5	755.5	422.0
Reassurance	982.0	418.0	1629.0	568.5	740.0		401.0	1198.0	316.0
Digital health responses	650.0	0.0	899.0	452.0	444.0		0.0	620.0	273.5

^aValues presented are medians.