Table. Collection dates, engagement, and positivity rates for severe acute respiratory syndrome coronavirus 2 infection, Curitiba, Brazil.

Date	Total tested	No. (%) positive
2020 Oct 2	275	0
2020 Oct 19	279	0
2020 Nov 6	510	6 (1.18)
2020 Nov 24	1,265	34 (2.69)
2020 Dec 8	1,070	17 (1.59)
2021 Jan 12	1,692	23 (1.36)
2021 Jan 26	1,737	14 (0.81)
2021 Feb 9	1,615	16 (0.99)
2021 Mar 29	196	1 (0.51)
2021 Apr 12	157	4 (2.55)
2021 Apr 20	872	2 (0.23)
2021 Apr 26	162	4 (2.47)
2021 May 4	884	12 (1.36)
2021 May 10	177	1 (0.56)
2021 May 18	1,431	20 (1.4)
2021 May 24	236	7 (2.97)
Total	12,558	161 (1.28)