Table 1.

Number of ED visits, rate per 1000 ED encounters during first 23 weeks of five flu seasons (1 October–29 February), and difference in rates between each of the seasons and the 2019–2020 flu season for CLS, influenza, and non-influenza ILI by state.

Season	Number of Visits	Rate per 1000	Percentage Change in Rates Comparing 2019–2020 to Previous Seasons	Number of Visits	Rate per 1000	Percentage Change in Rates Comparing 2019–2020 to Previous Seasons	Number of Visits	Rate per 1000	Percentage Change in Rates Comparing 2019–2020 to Previous Seasons
COVID-like symptoms	California			Texas			Florida
2015–2016	4134	45	−29% ***	3209	50	−23% ***	3569	48	−26% ***
2016–2017	4970	51	−19% **	3525	51	−22% ***	4421	53	−18% **
2017–2018	5058	51	−19% **	4176	60	−8% **	4370	52	−20% ***
2018–2019	4838	51	−19% **	4219	62	−5% *	4340	53	−18% **
4-season Average	4750	49	−22% **	3782	56	−14% ***	4175	52	−20% ***
2019–2020 *	5388	63		4132	65		4956	65
Influenza	California			Texas			Florida
2015–2016	196	2	−71% **	102	2	−82% ***	162	2	−71% ***
2016–2017	308	3	−57% **	242	3	−73% ***	254	3	−57% ***
2017–2018	973	10	43%	1185	17	55%	944	11	57%
2018–2019	216	2	−71% **	243	4	−64% **	275	3	−57% **
4-season average	423	4	−43% *	443	6	−65% *	411	5	−29%
2019–2020	596	7		683	11		541	7
Non-influenza ILI	California			Texas			Florida
2015–2016	7528	81	7%	5243	81	−9%	5799	78	−7%
2016–2017	8004	81	7%	5923	85	−4%	7658	92	10%
2017–2018	8696	88	16%	7294	105	18% *	7909	94	12%
2018–2019	6684	71	−7%	6187	92	3%	7066	86	2%
4-season average	7728	80	5%	6162	91	2%	7108	88	5%
2019–2020	6528	76		5641	89		6478	84

* p < 0.05; ** p < 0.001; *** p < 0.0001.